Math question about derivative (导数).详细如下图.可以加到我的全部积分

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$Math question about derivative (导数).详细如下图.可以加到我的全部积分$

Math question about derivative (导数).详细如下图.可以加到我的全部积分
Math question about derivative (导数).详细如下图.可以加到我的全部积分

Math question about derivative (导数).详细如下图.可以加到我的全部积分
g(x)=3*(e^x + e^(-x))^(-1)
g'(x) = 3 * (-1) * (e^x + e^(-x))^(-1-1) * (e^x + e^(-x))'
= -3 * (e^x + e^(-x))^(-2) * (e^x - e^(-x))
= -3(e^x - e^(-x)) / (e^x + e^(-x))^2

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