求不定积分∫[(1+1/x^2)(1-x^2)+xsinx]dx
求不定积分∫[(1+1/x^2)(1-x^2)+xsinx]dx
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求不定积分 1/(1+cosx)dx ((xcosx+sinx)/(xsinx)^2)dx (x^2+1/(x^3+3x
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求不定积分:∫[x(e^x)]/[(1+x)^2]dx
求不定积分∫(x^2-3x)/(x+1)dx
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求不定积分1/x^2dx
求不定积分(lnx/1+x^2)dx.
sin(x^1/2)dx 求不定积分
求不定积分(arctanx)/(1+x^2) dx