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MATEMÁTICA FINANCEIRA

NA EDUCAÇÃO BÁSICA 

EXERCÍCIOS GERAIS RESOLVIDOS

PROF. ILYDIO PEREIRA DE SÁ

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Prof. Ilydio Sá 2

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Prof. Ilydio Sá 3

Exercício 01

Uma mercadoria sofreu 4 acréscimos consecutivos de 3%, 4%, 6,5%

e 8%, respectivamente. esse mesmo período, as taxas de inf!a"#o

correspondente foram de $% 1,5% 5% e 3%. &'ten(a)a* + taxa nomina! correspondente ao aumento tota! acumu!ado

dessa mercadoria.

'* + taxa de inf!a"#o acumu!ada do período.

c* + taxa rea! de aumento dessa mercadoria.

a* 1,03 x 1,04 x 1,065 x 1,08 1,$3$1 fator de aumento damercadoria, !o-o, 1,$3$1 / 1* x 100 23,21% é a taxa nomina! doaumento acumu!ado da mercadoria.

'* 1,0$ x 1,015 x 1,05 x 1,03 1,11 / fator de inf!a"#o acumu!ada,!o-o, 1,11 / 1* x 100 11,97% é a taxa de inf!a"#o acumu!ada.

c* 2ator de aumento rea!   1,10041197,1

2321,1≅

axa rea! de aumento da mercadoria 1,1004 / 1* x 100 10,04%

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Prof. Ilydio Sá 4

Exercício 0$

 15% ____________ 360 dias

  x% ____________ 124 dias

  JUROS SIMPLES M = C .

 

105.167,00

  100.000

 0 124dias

a!cu!e o va!or do montante correspondente a um empréstimode 7100.000, com prao de 1$4 dias, sa'endose 9ue a taxa

co'rada é de 15% ao ano, a :uros simp!es.

167,00105M

1,05167x000100M 5,167%360

15.124x

=∴≅=

Fluxo de Caixa

da operação

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Prof. Ilydio Sá 5

 U! "a#i$a d& R'50.000, a#i"ad( d)*a+$& 10 !&s&s, *&+d&

 )*(s d& R'-.000. &$&*!i+a* a $axa a+)a "(**&s#(+d&+$&,

s& a a#i"a/( (i a )*(s si!#&s.

  5-.000

  50.000

 0 10

Exercício 03

  JUROS SIMPLES M = C .

meses10 para%,16de axa 1,16000500005! "   ⇒==

19,2%12x1,6%a#$alaxa %6,110

16% i me#sal,axa   ==∴==

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Prof. Ilydio Sá 6

JUROS SIMPLES

  13.000

  10.000

 0 12

Exercício 04

Taxa global da operação = 2,5% x 12 = 30%, logo fator = 1,3

Ca")a* ( !(+$a+$& da a#i"a/( d& )!

"a#i$a d& R' 10.000 #&( #*a( d& 12 !&s&s, $axa d& 2,5 % a.!., a )*(s si!#&s.

M = 10 000 x 1,3 = 13 000,00

Fáil, !ão "

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Prof. Ilydio Sá 7

Ca")a* ( !(+$a+$& d& )! "a#i$a d& R' 100.000,a#i"ad( $axa d& 4,5 % a.!., d)*a+$& 11 !&s&s.

; . 2n

  i = 4,5% a.!.

  M

 100.000

 0 11

Exercício 05

 M = 100.000 . 1,04511

 =

  M = 162.2-5,30

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Prof. Ilydio Sá !

 

i =

  25.600

  20.000

 0 6

; . 2n

Exercício 06)a a $axa a#*(xi!ada, d& )!a a#i"a/( 8)& *&+d&) (!(+$a+$& d& R' 25 600, a #a*$i* d& )! i+&s$i!&+$( d& R' 20 000,#(* )! #*a( d& 6 !&s&s

 

ms.ao4,2%de&aproximadaaxaa'o(o,

1,0421,2!"1,2!"

2!,100020

60025 "

66

6

≅=∴=

==

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Prof. Ilydio Sá 9

)& 8)a+$ia d&& s&* i+&s$ida, :(&, a i! d& a")!)a* R' 200.000, &! 10 a+(s, $axa d& 10 % a.a.

  i = 10 % a.a.

  200.000

  C

 0 10

; . 2n

Exercício 0

 C = 200.000 ; 1,110 =

  C = 77.10-,66

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Prof. Ilydio Sá 10

Exercício 08

  i = - % a.a.

  12.000

  5.000

 0 +

lo()1,0!*

lo()2,4* #)2,4*lo()1,0!*lo(.#

2,41,0!

2,45000

00012 1,0!

000121,0!x5000

#

#

#

=∴=

=

==

=

0,3!0211+0,477120,30103.3

 10lo(+3lo(2lo(.3

10lo(+3*x)2lo(10

24 lo()2,4*lo( 3

≅+≅

≅+=

==

0,033422+3.0,477120,30103.2

 100lo(+33.lo(2lo(.2

100lo(+*3x)2lo(100

10! lo( )1,0!*lo( 32

≅+≅

+=

==

a#os11,37670,03342

0,3!021 

lo()1,0!*

)2,4*lo( # ≅≅=

P(* 8)a+$( $&!#( d&& s&* "(("ad( ( "a#i$a d& R' 5.000, $axa d&-% a.a, a i! d& #*(d)i* )! !(+$a+$& d& R' 12 000, s&+d( a

"a#i$aia/( a+)a. ad(s< ( 2 0,30103 & ( 3 0,47712 

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Prof. Ilydio Sá 11

Exercício 0

I!ai+& )!a "ad&*+&$a d& #()#a+/a :i#($>$i"a8)& (&*&/a )*(s d& 4,5% a( s&!&s$*&, "(!

"a#i$aia/( ?i!&s$*a d(s )*(s. &$&*!i+& a$axa d& )*(s s&!&s$*a &&$ia.

4,5% a( s&!&s$*&, "(! )*(s ?i!&s$*ais = @ABA OMIAL

C(!( 1 s&!&s$*& #(ss)i 3 ?i!&s$*&s<@ABA EE@IDA IMES@RAL = 4,5% a.s. ; 3 = 1,5% a.?.

Ca#i$aia+d(Fs& 1,5% a.?. a )*(s "(!#(s$(s, d)*a+$&3 ?i!&s$*&s, #&( a$(* 1 G i+<

@ABA SEMES@RAL EE@IDA = 1,0153 = 1,0457  4,57% a.s.

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Prof. Ilydio Sá 12

A $axa d& )*(s d& )! &!#*>s$i!( ?a+"H*i( > d&

14% a.a., "(! #aa!&+$( $*i!&s$*a d(s )*(s.&$&*!i+& a $axa &&$ia a+)a d( &!#*>s$i!(.

Exercício 10

14% a. a., "(! #$( $*i!&s$*a d& )*(s = @ABA OMIAL

C(!( 1 a+( #(ss)i 4 $*i!&s$*&s<@ABA EE@IDA @RIMES@RAL = 14% a.a. ; 4 = 3,5% a.$.

Ca#i$aia+d(Fs& 3,5% a.$. a )*(s "(!#(s$(s, d)*a+$& 4$*i!&s$*&s, #&( a$(* 1 G i+<

@ABA EE@IDA AUAL = 1,0354 = 1,1475 14,75% a.a.

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Prof. Ilydio Sá 13

Exercício 11

U! i+a+"ia!&+$( (i "(!?i+ad( s(? $axa d& 15% a(a+(, "(! "a#i$aia/( a+)a. )a a $axa &8)ia&+$&,#a*a )!a ?as& d& )*( 8)ad*i!&s$*a

1 a#o 3 -$adrimesres

-" -" -"

a"

%.4,77de& pedida

ral-$adrimesaxaa'o(o,

1,047715,1"

1,15"""3

-

3

-a

3

-

≅=

=⇒=

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Prof. Ilydio Sá 14

 

Ca")& ( a(* d& #a*a 8)& (s d(is )x(s a?aix( s&a!&8)ia&+$&s $axa d& 3 % a.!.

R'12.000

0 1 2 3 4 5 6 0 1 2 3 4 5 6

R'-.000

  R'10.000 R' 10.000 

= -.000 1,033

 G 10.000 1,032 G 10.000 ; 1,03

1 G

  G 12.000 ; 1,032  = 40.370,70 

Exercício 1$

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Prof. Ilydio Sá 15

Exercício 13

Um e!etrodoméstico foi comprado de acordo com o f!uxo decaixa apresentado a'aixo. <eterminar a taxa de :uros mensa!,so're o sa!do devedor, inserida no pa-amento a prao.

23,3%& $rosdeme#salaxaa'o(o,

1,233

16

14,735 

16

2175 "

16

192255 

16

)+6*.!.4+255 "

06+5"+!"

600".500".!00

2

2

≅+

≅+

=

+±=

±=

=

+=

0 1 2

1200

#00

500$00

00 "o/o

es/olido