What technique of integration to use here?

1. Jan 1, 2009

shawshank

hey, this isn't really a homework problem but I have this integral that I can't solve cause i haven't studied techniques of integration.

Any suggesstions

$$\int$$$$\frac{1}{\sqrt{12x+0.02x^2}}$$

2. Jan 1, 2009

Dick

First you want to complete the square inside of the square root. You'll get something like a*(x+b)^2-c. Then do a trig substitution like c*sec(u)^2=a*(x+b)^2. Try it.