1.∫(sinxcosx)/(1+sin^2x)dx2.设f'(sinx)=cos^2x 则f(x)=3.已知 f'(cosx)=sinx 则f(cosx)=4.∫dx/(e^x-1)^1/2=.....第三题的答案 最后给的是 1/2 (sinxcosx-x)+c
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1.∫(sinxcosx)/(1+sin^2x)dx2.设f'(sinx)=cos^2x 则f(x)=3.已知 f'(cosx)=sinx 则f(cosx)=4.∫dx/(e^x-1)^1/2=.....第三题的答案 最后给的是 1/2 (sinxcosx-x)+c
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