It can't be right. The derivative of is not .
After performing the trigonometric substitution, the numerator should be , not .
x²/sqrt(9-x²)
u = x
a = 3
i used.... x=asinx
i end up substituting this into the problem....
x = theta
(3cosx)²/3cosx
i then reduce it to
3cosx and integrate it to get....
3sinx + c
now i use my triangle and solve in terms of x and now i get as a final awnser...
x + c
this doesnt seem right, can anyone verify this for me!