ज्ञात करें `int x^2/(1+x^4)dx`

Explanation

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