专文档下载】升本高数二概念

= 2 sin 0 cos 0 =\r1 + Ô&6\r cos 2= cos2 0 - sin2 0 = 2cos2 8 - 1 = 1 - 2sin2 0\ri + tg20\re cc 2fge „ . 2 zi tg~O 1 - cos 20 q 2 c 1 + cos20\rfg26 =\n# snr 6 = * 2 = ---------- %cos2^ = -------------\r:M M =0< Ž\r/ ( ).\r(A)0 (B)l (C)Í`? (D)͞0\rÖ:A\r2 . P Q × / ? x = 2 º<Ž\r"12Ù " ÛN( ).\r(A)l (B)2 (C)3 (D)4\rÖ:C\r3 .E]d\r<Ž\r-\r«y = / (2)y = -^= (3)y = g (4)y = 2" (5)y = log^ x\riJx3 ¬.\r˜G(i)y = 6 /\r-1 3 -2\r(2)yF=(x 4 ) '= - 9 7.\r4\rI 4 = (­)"=-2­@\r(4)y'=2x In 2;\rxln 3