int_(0)^(2/3)(dx)/(4+9x^(2))

Evaluate :int_(0)^(3)(dx)/(9+x^(2))

I=int_(0)^(2)((5-x)/(9-x^(2)))dx

int_(0)^(2//3)sqrt(4-9x^(2))dx=

int_(1)^(2)(3x)/(9x^(2)-1)dx

int_(0)^(3)(x+1)/(x^(2)+9)dx=

Evaluate the following definite integrals Let int_(0)^(1)(dx)/(sqrt(16+9x^(2)))+int_(0)^(2)(dx)/(sqrt(9+4x^(2)))=ln a

int_(0)^(3) (3x + 1)/(x^(2)+9)dx=