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

int(x^(2))/(1-x^(4))dx

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

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

9. int(x tan^(-1)x^(2))/(1+x^(4))dx

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

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

int(1-x^(2))/((1+x^(2))sqrt(1+x^(4)))dx is equal to

int(1-x^(2))/((1+x^(2))sqrt(1+x^(4)))dx is equal to