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(sin(x-1)/cos(x-1))^2.求导!
人气:137 ℃ 时间:2020-10-02 02:23:32
解答
[sin(x-1)/cos(x-1)]²=tan²(x-1)
所以原式=2tan(x-1)×sec²(x-1)×1
=2tan(x-1)sec²(x-1)
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