" 1."int(x^(2)+(1)/(x^(2)))^(3)dx

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

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

int_(0)^(1) (1)/(x^(2) +2x+3)dx

int_(0)^(1) (1)/(x^(2) +2x+3)dx

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

Evaluate : (i) int(3x^(2))/((1+x^(6)))dx (ii) int(x^(3))/((x^(2)+1)^(3))dx (iii) (x^(8))/((1-x^(3))^(1//3))dx

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

int(x^(1/2))/(x^(1/2)-x^(1/3))dx is equal to

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

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