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arctan(x+y)=x的导数
人气:130 ℃ 时间:2020-04-30 12:28:42
解答
arctan(x+y) = x
x+y = tanx
1+y' = (secx)^2
y' = (secx)^2 -1
= (tanx)^2arctan(x+y) = x

tan(arctan(x+y)) = tanx
x+y = tanx
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