" 5."int(1)/((x+1)^(2)(x^(2)+1))dx

Evaluate: int(1)/((x^(2)+2)(x^(2)+5))dx

int(1)/(x^(4)+5x^(2)+1)dx

"int_(-1)^(4)(x^(5)+2x^(2)+x)dx

int(x^(5))/(x^(2)+1)dx

int(x+2)(x-1)^(5)dx

(i) int((x^(2) - 1)/(x^(2) + 1))dx , (ii) int ((x^(6)- 1)/(x^(2) + 1))dx (iii) int ((x^(4))/(1+x^(2)))dx , (iv) int((x^(2))/(1+x^(2)))dx

int_(-1)^(1)(x^(2)+x)/(x^(2)+1)dx=

Find int (2x^(2) -5x +1)/(x^(2)(x^(2) -1))dx.

int(x)/((1+x^(2))^(5))dx

Evaluate: int_(1)^(2)(1)/((x+1)(x+2))dx( ii) int_(1)^(2)(1)/(x(1+x^(2)))dx