`intsqrt(1+x^(2))dx` बराबर है -

Options

A. `(x)/(2)sqrt(1+x^(2))+1/2log|x+sqrt(1+x^(2))|+C`
B. `(2)/(3)(1+x^(2))^(3/2)+C`
C. `(2)/(3)x(1+x^(2))^(3/2)+C`
D. `(x)/(2)sqrt(1+x^(2))+(1)/(2)x^(2)log|x+sqrt(1+x^(2))|+C`

Answer

A