大神帮忙求不定积分 40
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(1)∫(sec1/x)^2/x^2dx
= -∫(sec1/x)^2d(1/x)
= -tan(1/x) + C
(2)∫(e^2x-1)/e^xdx
= ∫(e^x - e^-x)dx
= e^x + e^-x + C
(3)∫e^x(1+e^x)dx
=∫(e^x + e^2x)dx
= e^x +1/2e^2x + C
(4)∫√arcsinx/(1-x^2)dx
=∫(arcsinx)^(1/2)darcsinx
=2/3(arcsinx)^(3/2) + C
= -∫(sec1/x)^2d(1/x)
= -tan(1/x) + C
(2)∫(e^2x-1)/e^xdx
= ∫(e^x - e^-x)dx
= e^x + e^-x + C
(3)∫e^x(1+e^x)dx
=∫(e^x + e^2x)dx
= e^x +1/2e^2x + C
(4)∫√arcsinx/(1-x^2)dx
=∫(arcsinx)^(1/2)darcsinx
=2/3(arcsinx)^(3/2) + C
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