13*int x^(2)(1-(1)/(x^(2)))dx

"int_1^(2)((1)/(x)-(1)/(2x^(2)))dx

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

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

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

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

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

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

Evaluate : (i) inte^(x)((1)/(x)-(1)/(x^(2)))dx (ii) inte^(x)((1)/(x^(2))-(2)/(x^(3)))dx (iii) inte^(x){sin^(-1)x+(1)/(sqrt(1-x^(2)))}dx (iv) inte^(x)(tanx+logsecx)dx