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

int(dx)/((x+1)^(2)(x^(2)+1))[CBSE2002]

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

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

int dx/((x^(2)+1)(x^(2)+4))= k tan^(-1) x + l (tan^(-1)) x/2 then

(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

If int(dx)/((x+2)(x^(2)+1)) = alog|1+x^(2)|+btan^(-1)x+ 1/5log|x+2|+C , then

If int(dx)/((x+2)(x^(2)+1)) = alog|1+x^(2)|+btan^(-1)x+ 1/5log|x+2|+C , then