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

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

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

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

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

Evaluate the integerals. int (x+(4)/(1+x^(2))) dx " on " R .

int(2x+1)(x^(2)+x+1)^(4)dx=

Evaluate the integerals. int(x)/(1+x^(2))dx, x in R.

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

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