tan(x) 反导数∫tan(x) ( Anti derivative)

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tan(x)反导数∫tan(x)(Antiderivative)tan(x)反导数∫tan(x)(Antiderivative)tan(x)反导数∫tan(x)(Antiderivative)反导数就

tan(x) 反导数∫tan(x) ( Anti derivative)
tan(x) 反导数
∫tan(x) ( Anti derivative)

tan(x) 反导数∫tan(x) ( Anti derivative)
反导数就是积分:antiderivative = integration
∫tanxdx
=∫(sinx/cosx)dx
=∫-dcosx/cosx
= -ln|cosx| + C

ln(abs(secx))