Well after my calculations a = 2/3 (x^2+4)^(1/2) (x^2-9)^((-2)/3)-x(x^2-9)^(1/3) (x^2+4)^((-1)/2))/(x^2+4) g= (2/3 (x^2+4)^(1/2) x (x^2-9)^2/4 o= 6 x 2+4)^((-1)/2))/(x^2+4) cps = $1,00
