int((x^(4)+1))/(x^(6)+1)dx

int (x^(8))/(x^(6) + 1) 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

Evaluate: (i) int(1)/(sqrt(x))(1+(1)/(x))dx (ii) int(x^(6)+1)/(x^(2)+1)dx

int(x^(5))/(x^(6)+1)dx

int(x^(8))/(x^(6)+1)dx=

Evaluate: int(1)/(x^(4)+x^(6))dx

(i) int ((1+x)^(3))/(sqrt(x))dx " "(ii) int((1+x)^(3))/(x^(4)) dx

(i) int ((1+x)^(3))/(sqrt(x))dx " "(ii) int((1+x)^(3))/(x^(4)) dx