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Evaluate:`int(log(1+1/x))/(x(1+x))dx` |
Answer» Correct Answer - ` -((log(1+(1)/(x)))^(2))/(2) + C` Let `log(1+(1)/(x))=t` ` :. (0-(1)/(x^(2)))/(1+(1)/(x)) dx=dt ` ` implies (-dx)/(x(x+1))=dt ` ` implies int(log(1+(1)/(x)))/(x(1+x))dx=-int t dt ` `=- (t^(2))/(2) +c ` ` = -((log(1+(1)/(x)))^(2))/(2) + c` |
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