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数学
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求导y=arctan(1-x^2) 要过程
如题
人气:379 ℃ 时间:2020-05-22 16:21:13
解答
(arctan(1-x^2))'=1/(1+(1-x²)²)(1-x²)’
=(-2x)/(1+(1-x²)²)
=-2x/(x^4-2x²+2)
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