div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: 18:30 90 T f c = — + E an cos na + bn sin nc O …f c = — + E an cos na + bn sin nc O bnn = 1 2 f@ cos nadc f c sin ncdc b X an 1 l an n = 2 c e e src=https:reader033vdocumentsnetreader033viewer20220605155f8f89dbf8c91c08a059db4ahtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: 18:30 90 T f c = — + E an cos na + bn sin nc O …f c = — + E an cos na + bn sin nc O bnn = 1 2 f@ cos nadc f c sin ncdc b X an 1 l an n = 2 c e e src=https:reader033vdocumentsnetreader033viewer20220605155f8f89dbf8c91c08a059db4ahtml5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdiv