" 7."int(x^(2)-1)/(x^(2)+1)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

" (7) Evaluate: "int(x^(2))/(1+x^(3))dx

int(7x-8)/(x(x-1)^(2))dx

int(1)/(3x^(2)+7)dx

int(1)/(3x^(2)+7)dx

int_(1)^(2)(1)/(x^(2)-4x+7)dx=

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

Evaluate: int(x^(7))/((1-x^(2))^(5))dx

The value of int(x^(7))/((1-x^(2))^(5))dx is

Evaluate: int(x^(2)-1)/(x^(4)-7x^(2)+1) dx