为什么arctanx求导后是一个有理函数,怎么从逻�层面理解这个事(脱离反函数与隐函数的求导法则)? 知乎 Template




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tomski为什么arctanx求导后是一个有理函数,怎么从逻�层面理解这个事(脱离反函数与隐函数的求导法则)? 知乎 coloring