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

(i) int (x dx)/(x^2+3x+2) (ii) int x/(x^2+5x+6) dx

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

int(dx)/(2x^2+3x+5)=

Assertion (A) : int(dx)/(x^(2) + 2x + 3) = (1)/(sqrt(2)) tan^(-1)((x+1)/(sqrt(2))) + c Reason (R) : int(dx)/(x^(2) + a^(2)) = (1)/(a) tan^(-1)((x)/(a)) + c

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

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

int(dx)/((3x^(2)-4x+2)^((3)/(2)))

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

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

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