indefinite integration - functions sine & cosine - questions
TRANSCRIPT
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The Nail It Series Indefinite Integration of
Functions Involving Sine & Cosine
Questions Compiled by:
Dr Lee Chu KeongNanyang Technological University
http://ascklee.org/CV/CV.pdfhttp://ascklee.org/CV/CV.pdf
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About the Nail It Series
About the Nail It Series
Nail It is a series of ebooks containing questions on various topics in mathematics, compiled
from textbooks that are out-of-print. Each ebook contains at least fifty questions. The ideabehind the series is threefold:
(i) First, to give students sufficient practice on solving questions that are commonly asked
in examinations. Mathematics is not a spectator sport, and students need all the drill
they can get to achieve mastery. Nail It ebooks supplies the questions.
(ii) Second, to expose students to a wide variety of questions so that they can spot patterns
in their solution process. Students need to be acquainted with the different ways inwhich a questions can be posed.
(iii) Third, to build the confidence of students by arranging the questions such that the easy
ones come first followed by the difficult ones. Confidence comes with success in solving
problems. Confidence is important because it leads to a willingness to attempt more
questions.
Finally, to “nail” something is to get it absolutely right , i.e., to master it. Nail It ebooks to enable
motivated students to master the topics they have problems with.
If you have any comments or feedback, I’d like to hear them. Please email them to me at
[email protected]. Finally, I’d like to wish you all the best for your learning journey.
Lee Chu Keong (May 14, 2016)
mailto:[email protected]:[email protected]:[email protected]
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Features of the Nail It Ebooks
Features of the Nail It Series Ebooks
1. The Nail It Series ebooks are completely free. The questions are compiled from textbooks
that are out-of-print and those that are very difficult to locate. As Winston Churchill oncesaid, “We make a living by what we get. We make a life by what we give.”
2. The Nail It Series ebooks have been designed with mastery of the subject matter in mind.
There are plenty of textbooks, and they all can help you get the “A” grade. Nail It ebooks
are designed to make you the Michael Phelps of specific topics.
3. Each Nail It Series ebook has a minimum of fifty questions, with each question appearing
on its own page. View it on your tablet or a mobile phone, and start working on them.
4. The Nail It Series ebooks are modular, and compatible with different syllabi used in
different parts of the world. I list down the links with the syllabi I am familiar with.
5. Students are usually engrossed in solving questions, and miss out on the connections
between different questions. Compare pages puts the spotlight on usually two, but
sometimes more questions, the solution of which are closely related. Contrast pages does
the same, but with two or more questions that look alike, but that require differentapproaches in its solution. Spot the Pattern pages challenge students to spot the pattern
underlying the solution process.
6. Essential to Know pages provides must-know facts about questions already completed. I
suggest committing the material presented in the Essential to Know pages to memory.
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About Learning
About Learning
Many teachers today like to tell their students that learning is enjoyable, and that learning is
fun. What students quickly realise is that learning is often repetitive (and therefore boring),cognitively demanding (and therefore tiring), and time-consuming (and therefore costly). I’d
like to point out seven things that are needed for effective learning to take place. I suspect
teachers don’t mention them any longer because they are unpopular.
1. Learning takes hard work – a lot of hard work. But I’ve realised that all of life’s
worthwhile goals – setting up a business, starting a family, etc. can only be achieved with
hard work.
2. Learning takes dedication. There are no short cuts to learning. Learning is an intense
activity. Are you willing to learn at all cost?
3. Learning takes commitment . There are thing that you’ve going to have to give up, if you
want to learn. The price for mastering a subject matter is high. Are you willing to pay the
price (e.g., reducing the amount of time watching YouTube videos, or playing your
favourite computer game)?
4. Learning takes discipline. Closely tied to discipline is sacrifice, and a conscious effort to
minimise distractions. Are you willing to sacrifice (not meeting your friends so often,
watching less movies, etc.) in order to learn?
5. Learning takes motivation. And here, you have decide what exactly, motivates you. Are
you after an “A” grade, or are you after complete mastery of the subject matter? In other
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About Learning
words, are you happy with 75 marks, or would not be satisfied until you get 100 marks? A
gulf separates an “A” grade from complete mastery, and you have to decide what you are
after. This is because the game plan for each is different.
6. Learning takes participation. There are no “passengers” in learning. It is immersive, and
requires you to be interested, alert, and engaged.
7. Learning takes courage. It requires you ask people for help, step out of your comfort zone,
re-examine your assumptions, and make mistakes. All this takes courage, and requires
you to step out of your comfort zone. Are you courageous enough to learn?
This begs the question: Did my teachers lie? Yes and no. What they were probably referring to
(as being fun and enjoyable) is the ecstasy one feels when mastery of a topic has been achieved.When you work hard for something, and you succeed, the feeling is simply indescribable. This
is why I encourage you to strive for mastery – it’s a destination that’s full of fun. The journey,
however, is arduous and treacherous. Be prepared to slog.
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Syllabi Compatibility
Syllabi Compatibility
The contents of this Nail It ebook will benefit:
junior college students in Singapore, who are sitting for the GCE A Level H2 Mathematics
(9740) Paper;
Sixth Form students in Malaysia, who are sitting for the STPM Mathematics T (954) Paper;
students in India who are sitting for the IIT JEE (Main & Advanced) Mathematics Paper;
students around the world, who are sitting for the Cambridge International Examinations
(CIE) Mathematics Paper.
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Integration of Trigonometric Functions Involving Only Sine and Cosine
Questions compiled by Dr Lee Chu Keong
Section I
Indefinite Integration of:
∫ sin cos d
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Integration of Trigonometric Functions Involving Only Sine and Cosine
Questions compiled by Dr Lee Chu Keong
Question 1
Find:
∫sincosd
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Integration of Trigonometric Functions Involving Only Sine and Cosine
Questions compiled by Dr Lee Chu Keong
Question 2
Find:
∫sincos d
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Integration of Trigonometric Functions Involving Only Sine and Cosine
Questions compiled by Dr Lee Chu Keong
Question 3
Find:
∫ sincos d Source: AM202(25)
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Integration of Trigonometric Functions Involving Only Sine and Cosine
Questions compiled by Dr Lee Chu Keong
Question 4
Find:
∫sincos d
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Integration of Trigonometric Functions Involving Only Sine and Cosine
Questions compiled by Dr Lee Chu Keong
Question 5
Find:
∫sincos4 d Source: AM204(62)
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Integration of Trigonometric Functions Involving Only Sine and Cosine
Questions compiled by Dr Lee Chu Keong
Question 6
Find:
∫sincos d
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Integration of Trigonometric Functions Involving Only Sine and Cosine
Questions compiled by Dr Lee Chu Keong
Question 7
Find:
∫sincos6 d
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Integration of Trigonometric Functions Involving Only Sine and Cosine
Questions compiled by Dr Lee Chu Keong
Question 8
Find:
∫sin √ cosd
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Integration of Trigonometric Functions Involving Only Sine and Cosine
Questions compiled by Dr Lee Chu Keong
Question 9
Find:
∫sin √ cos d
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Integration of Trigonometric Functions Involving Only Sine and Cosine
Questions compiled by Dr Lee Chu Keong
Section II
Indefinite Integration of:
∫sin cos d
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Integration of Trigonometric Functions Involving Only Sine and Cosine
Questions compiled by Dr Lee Chu Keong
Question 10
Find:
∫sincosd
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Integration of Trigonometric Functions Involving Only Sine and Cosine
Questions compiled by Dr Lee Chu Keong
Question 11
Find:
∫sin cosd Source: AM200(15)
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Integration of Trigonometric Functions Involving Only Sine and Cosine
Questions compiled by Dr Lee Chu Keong
Question 12
Find:
∫sin cosd
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Integration of Trigonometric Functions Involving Only Sine and Cosine
Questions compiled by Dr Lee Chu Keong
Question 14
Find:
∫sin cosd [Porter, Examples 17a, Question 3]
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Integration of Trigonometric Functions Involving Only Sine and Cosine
Questions compiled by Dr Lee Chu Keong
Question 15
Find:
∫sin6 cosd
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Integration of Trigonometric Functions Involving Only Sine and Cosine
Questions compiled by Dr Lee Chu Keong
Question 16
Find:
∫ √ sincosd
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Integration of Trigonometric Functions Involving Only Sine and Cosine
Questions compiled by Dr Lee Chu Keong
Question 17
Find:
∫ √ sin cosd
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Integration of Trigonometric Functions Involving Only Sine and Cosine
Questions compiled by Dr Lee Chu Keong
Pause and Think
Study the solutions to Question 43 and 52. Are both
solutions really the same?
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Integration of Trigonometric Functions Involving Only Sine and Cosine
Questions compiled by Dr Lee Chu Keong
Section III
Indefinite Integration of:
∫sin ⋅ cos (where = )
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Integration of Trigonometric Functions I
Questions compiled by Dr Lee Chu Keong
Question 18
Find:
∫sincosd
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Integration of Trigonometric Functions I
Questions compiled by Dr Lee Chu Keong
Question 19
Find:
∫sin cos d Source: AM296(8), MW194(2)
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Integration of Trigonometric Functions I
Questions compiled by Dr Lee Chu Keong
Question 20
Find:
∫sin cos d Source: MW194(3)
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Integration of Trigonometric Functions I
Questions compiled by Dr Lee Chu Keong
Question 21
Find:
∫sin4 cos4 d
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Integration of Trigonometric Functions I
Questions compiled by Dr Lee Chu Keong
Question 22
Find:
∫sin3cos3d
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Integration of Trigonometric Functions I
Questions compiled by Dr Lee Chu Keong
Question 23
Find:
∫sin 2cos 2d
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Integration of Trigonometric Functions I
Questions compiled by Dr Lee Chu Keong
Question 24
Find:
∫ 1sincos d
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Integration of Trigonometric Functions I
Questions compiled by Dr Lee Chu Keong
Question 25
Find:
∫ 1sin cos d
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Integration of Trigonometric Functions I
Questions compiled by Dr Lee Chu Keong
Question 26
Find:
∫ cos2sin cos d
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Integration of Trigonometric Functions I
Questions compiled by Dr Lee Chu Keong
Section IVa
Indefinite Integration of:
∫ sin ⋅ cos (where is odd)
f
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Integration of Trigonometric Functions I
Questions compiled by Dr Lee Chu Keong
Question 27
Find:
∫ cos
sin d
I i f T i i F i I
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Integration of Trigonometric Functions I
Questions compiled by Dr Lee Chu Keong
Question 28
Find:
∫sin cos d Source: AM295(4)Note: = 3 (odd)
I t ti f T i t i F ti I
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Integration of Trigonometric Functions I
Questions compiled by Dr Lee Chu Keong
Question 29
Find:
∫sin4 cos d Note: = 3 (odd)
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Integration of Trigonometric Functions I
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Integration of Trigonometric Functions I
Questions compiled by Dr Lee Chu Keong
Question 31
Find:
∫ √ sincos d Source: PV402(32)
Integration of Trigonometric Functions I
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Integration of Trigonometric Functions I
Questions compiled by Dr Lee Chu Keong
Question 32
Find:
∫sin cos d Note: = 5 (odd)Source: DDB426(18)
Integration of Trigonometric Functions I
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Integration of Trigonometric Functions I
Questions compiled by Dr Lee Chu Keong
Question 33
Find:
∫sin4 cos d Note:
= 5 (odd)
Integration of Trigonometric Functions I
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Integration of Trigonometric Functions I
Questions compiled by Dr Lee Chu Keong
Question 34
Find:
∫ cos
sin d
Integration of Trigonometric Functions I
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g g
Questions compiled by Dr Lee Chu Keong
Question 35
Find:
∫sin6 cos7 d
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Integration of Trigonometric Functions I
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Questions compiled by Dr Lee Chu Keong
Question 37
Find:
∫ cos
√ sin d Source: MW194(7)
Integration of Trigonometric Functions I
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Questions compiled by Dr Lee Chu Keong
Question 38
Find:
∫ cos sin d Source: RIT1(6)
Integration of Trigonometric Functions I
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Questions compiled by Dr Lee Chu Keong
Section IVb
Indefinite Integration of:
∫ sin ⋅ cos (where is odd)
Integration of Trigonometric Functions I
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Questions compiled by Dr Lee Chu Keong
Question 39
Find:
∫sin cos d
Integration of Trigonometric Functions I
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Questions compiled by Dr Lee Chu Keong
Question 40
Find:
∫sin cos4 d
Integration of Trigonometric Functions I
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Questions compiled by Dr Lee Chu Keong
Question 41
Find:
∫sin √ cosd
Integration of Trigonometric Functions I
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Questions compiled by Dr Lee Chu Keong
Question 42
Find:
∫ sin
√ cos d
Integration of Trigonometric Functions I
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Questions compiled by Dr Lee Chu Keong
Question 43
Find:
∫ sin
cos4 d
Integration of Trigonometric Functions I
Q i 44
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Questions compiled by Dr Lee Chu Keong
Question 44
Find:
∫sin(2 + 3) cos(2 + 3) d Source: MW194(10)
Integration of Trigonometric Functions I
Q i 45
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Questions compiled by Dr Lee Chu Keong
Question 45
Find:
∫sin cos d
Integration of Trigonometric Functions I
Q ti 46
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Questions compiled by Dr Lee Chu Keong
Question 46
Find:
∫ sin
cos d
Integration of Trigonometric Functions I
Q ti 47
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Questions compiled by Dr Lee Chu Keong
Question 47
Find:
∫ sincos d Source: AM202(25)
Integration of Trigonometric Functions I
Q ti 48
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Questions compiled by Dr Lee Chu Keong
Question 48
Find:
∫ sin
√ cos d Source: MW194(8)
Integration of Trigonometric Functions I
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Questions compiled by Dr Lee Chu Keong
Section IVc
Indefinite Integration of:
∫ sin ⋅ cos (where and are both even)
Integration of Trigonometric Functions I
Question 49
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Questions compiled by Dr Lee Chu Keong
Question 49
Find:
∫sin cos4 d
Integration of Trigonometric Functions I
Question 50
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Questions compiled by Dr Lee Chu Keong
Question 50
Find:
∫sin4 cos d
Integration of Trigonometric Functions I
Question 51
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Questions compiled by Dr Lee Chu Keong
Question 51
Find:
∫sin4 3cos 3d Source: AM296(9)
Integration of Trigonometric Functions I
Question 52
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Questions compiled by Dr Lee Chu Keong
Question 52
Find:
∫cos 2sin4 2 d
Source: DDB422(5)
Integration of Trigonometric Functions I
Question 53
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Questions compiled by Dr Lee Chu Keong
Question 53
Find:
∫ cos
sin6 d
Integration of Trigonometric Functions I
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Questions compiled by Dr Lee Chu Keong
Section IVd
Indefinite Integration of:
∫ sin ⋅ cos (where and are both − ve)
Integration of Trigonometric Functions I
Question 54
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Questions compiled by Dr Lee Chu Keong
Question 54
Find:
∫ 1sincos d
Integration of Trigonometric Functions I
Question 55
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Questions compiled by Dr Lee Chu Keong
Question 55
Find:
∫ 1sin cos d
Integration of Trigonometric Functions I
Question 56
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Questions compiled by Dr Lee Chu Keong
Question 56
Find:
∫ 1sin cos d
Integration of Trigonometric Functions I
Question 57
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Questions compiled by Dr Lee Chu Keong
Question 57
Find:
∫ sin
1 + cos d
Integration of Trigonometric Functions I
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Questions compiled by Dr Lee Chu Keong
Section V
Indefinite Integration of:
∫(sin + cos ) d (and variations)
Integration of “Pure” Trigonometric Functions
Question 58
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Questions compiled by Dr Lee Chu Keong
Quest o 58
Find:
∫(sin + cos ) d
Integration of “Pure” Trigonometric Functions
Question 59
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Questions compiled by Dr Lee Chu Keong
Q
Find:
∫(sin + cos ) d
Integration of “Pure” Trigonometric Functions
Question 60
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Questions compiled by Dr Lee Chu Keong
Q
Find:
∫(sin + cos ) d
Integration of “Pure” Trigonometric Functions
Question 61
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Questions compiled by Dr Lee Chu Keong
Q
Find:
∫(sin4 + cos4 ) d
Integration of “Pure” Trigonometric Functions
Question 62
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Questions compiled by Dr Lee Chu Keong
Q
Find:
∫(sin6 + cos6 ) d
Integration of “Pure” Trigonometric Functions
Question 63
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Questions compiled by Dr Lee Chu Keong
Find:
∫(sin8 + cos8 ) d
Integration of “Pure” Trigonometric Functions
Question 64
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Questions compiled by Dr Lee Chu Keong
Find:
∫(sin − cos ) d
Integration of “Pure” Trigonometric Functions
Question 65
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Questions compiled by Dr Lee Chu Keong
Find:
∫ 1sin + cos d
Integration of “Pure” Trigonometric Functions
Question 66
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Questions compiled by Dr Lee Chu Keong
Find:
∫ 1sin4 + cos4 d
Sources
Sources
AY Ayres, F., & Mendelson, E. (2000). Calculus (4th ed.). New York: McGraw-Hill.
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y , , , ( ) ( )
DDB Berkey, D.D. (1988). Calculus (2nd ed.). New York: Saunders College Publishing.
EP Edwards, C.H., & Penney, D.E. (1986). Calculus and Analytic Geometry (2nd ed.). Englewood Cliffs, NJ: Prentice-
Hall.
EWS Swokowski, E.W. (1984). Calculus with Analytic Geometry (3rd ed.). Boston, MA: Prindle, Weber & Schmidt.
JLS Smyrl, J.L. (1978). An Introduction to University Mathematics. London: Hodder and Stoughton.
GM Matthews, G. (1980). Calculus (2nd ed.). London: John Murray.
LS Chee, L. (2007). A Complete H2 Maths Guide (Pure Mathematics). Singapore: Educational Publishing House.
MW March, H.W., & Wolff, H.C. (1917). Calculus. New York: McGraw-Hill Co.
JMAW Marsden, J., & Weinstein, A. (1985). Calculus I . New York: Springer-Verlag.PV Purcell, E.J., & Varberg, D. (1987). Calculus with Analytic Geometry (5th ed.). Englewood Cliffs, NJ: Prentice-Hall.
RAA Adams, R.A. (1999). Calculus: A Complete Course (4th ed.). Don Mills, Canada: Addison Wesley Longman.
RCS Solomon, R.C. (1988). Advanced Level Mathematics. London: DP Publications.
RIP Porter, R.I. (1979). Further Elementary Analysis (4th ed.). London: G. Bell & Sons.
SIG Grossman, S.I. (1988). Calculus (4th ed.). Harcourt Brace Jovanovich.
SRG Sherlock, A.J., Roebuck, E.M., & Godfrey, M.G. (1982). Calculus: Pure and Applied. London: Edward Arnold.
TFWG Thomas, G.B., Finney, R.L., Weir, M.D., & Giordano, F.R. (2003). Thomas’ Calculus (Updated 10th ed.). Boston:
Addison Wesley.
TKS Teh, K.S. (1983). Pure and Applied Mathematics (‘O’ Level). Singapore: Book Emporium.
WFO Osgood, W.F. (1938). Introduction to the Calculus.
About Dr Lee Chu Keong
About Dr Lee Chu Keong
Dr Lee has been teaching for the past 25 years. He has taught in
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Dr Lee has been teaching for the past 25 years. He has taught in
the Nanyang Technological University, Temasek Polytechnic, and
Singapore Polytechnic. The excellent feedback he obtained year after
year is a testament to his effective teaching methods, the clarity with
which he explains difficult concepts, and his genuine concern for the
students. In 2015, Dr Lee won the Nanyang Teaching Award (School
Level) for dedication to his profession.
Dr Lee has a strange hobby – he collects mathematics textbooks.
He visits bookstores when he goes to a city he has never been to, to
find textbooks he does not already have. So far, he has textbooksfrom Singapore, China, Taiwan, Japan, England, the United States,
Malaysia, Indonesia, Thailand, Myanmar, France, the Czech Republic,
France and India. The number of textbooks in his collection grows
practically every week!
For mathematics, Dr Lee believes the only way to better grades is practice, more practice,
and yet more practice. While excellent textbooks are a plenty, compilations of questions are a
lot harder to find. For this reason, he started the Nail It Series, a series of ebooks containingquestions on various topics commonly tested in mathematic examinations around the world.
Carefully studying the questions and working their solutions out should improve the grades of
the students tremendously.