1.

`int(dx)/(sqrt(2x+3)+sqrt(2x-3))`A. `(1)/(18)(2x+3)^((3)/(2))+(1)/(18)(2x-3)^((3)/(2))+C`B. `(1)/(18)(2x+3)^((3)/(2))-(1)/(18)(2x-3)^((3)/(2))+C`C. `(1)/(12)(2x+3)^((3)/(2))-(1)/(12)(2x-3)^((3)/(2))+C`D. none of these

Answer» Correct Answer - B
`I=int(1)/({sqrt(2x+3)+sqrt(2x-3)})xx({sqrt(2x+3)-sqrt(2x-3)})/({(2x+3)-sqrt(2x-3)})dx`.
`=int({sqrt(2x+3)-sqrt(2x-3)})/({(2x+3)-(2x-3)})dx=(1)/(6)int{sqrt(2x+3)-sqrt(2x-3)}dx`
`=(1)/(18)(2x+3)^((3)/(2))-(1)/(18)(2x+3)^((3)/(2))+C`.


Discussion

No Comment Found