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楼主: simcity2013 (ONLY THE STRONG SURVIVE)   2014-04-02 23:25:03
若xf(x^2)=ln(x^4+1),则f'(1)=?
我想问的是答案只给1-(1/2)ln2
难道没有-1+(1/2)ln2吗 ??
谢谢!!

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