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Evaluate:`int(sqrt(x)dx)/(1+x)` |
Answer» Correct Answer - `2sqrt(x)-2tan^(-1)sqrt(x)+C` ` " Put " x=t^(2) or dx=2tdt.` Then, `int(sqrt(x)dx)/(1+x)=2int(t^(2)dt)/(1+t^(2)) ` ` =2int(1-(1)/(1+t^(2)))dt ` `=2(t-tan^(-1)t)+C` ` =2sqrt(x)-2tan^(-1)sqrt(x)+C` |
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