1.

`intcossqrt(x)dx=?`A. `sinsqrt(x)+cossqrt(x)+C`B. `(1)/(2)(sqrt(x)sinsqrt(x)-cossqrt(x))+C`C. `2[sqrt(x)sinsqrt(x)+cossqrt(x)]+C`D. none of these

Answer» Correct Answer - C
Putting `sqrt(x)=t and(1)/(sqrt(x))dx=2dt", we get "dx=2tdt`
`:." "I=2intunderset(I)(t)underset(II)(cost)dt`.


Discussion

No Comment Found