I=int(x^(2))/(x^(4)-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

Evaluate: (i) int(1)/(a^(2)x^(2)-b^(2))dx (ii) int(x^(2)-1)/(x^(2)+4)dx

Evaluate : (i) int(dx)/((1-4x^(2))) (ii) int(dx)/((32-2x^(2))) (iii) int(x^(2))/((1-x^(6)))dx

I=int(x)/(x^(4)-x^(2)+1)dx

(i) int ((1+x)^(3))/(sqrt(x))dx " "(ii) int((1+x)^(3))/(x^(4)) dx

(i) int ((1+x)^(3))/(sqrt(x))dx " "(ii) int((1+x)^(3))/(x^(4)) dx

(i)int(x^(3)-1)/(x^(2))dx(ii)int(x^(2/3)+1)dx

I=int(sqrt(x^2+1))/(x^(4))dx

I=int(2x^(3)+4x+1)/(x)dx