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

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

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

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

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

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

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

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

int (dx)/((x+1)(2x+1)) (ii) int (x-1)/((x-2)(x-3)) dx .