1.

Evaluate ` int(dx)/(x+sqrt(x))`

Answer» Correct Answer - `2log(sqrt(x)+1)+C`
` I=int(dx)/(x+sqrt(x))=int(dx)/(sqrt(x)(sqrt(x)+1)). `
` " Put " sqrtx=z `
` :. (1)/(2sqrt(x))dx=dz `
` :. I=int(2dz)/(z+1)`
`=2log|z+1|+C`
` =2log(sqrt(x)+1)+C`


Discussion

No Comment Found

Related InterviewSolutions