Question

integral of 3/(x^2+9) from sqrt(3) to 3

Answer 1

\[\int\limits_{\sqrt{3}}^{3} \frac{3}{x^2 + 9}\]

Answer 2

pull out the 3 on top and you'll see what you have

Answer 3

also you can switch the x^2+9 to 9+x^2

Answer 4

yup it's arctan

Answer 5

I'm just trying to find out how to get the answer of pi/12.

Answer 6

\[3\int\limits_{\sqrt{3}}^{3} \frac{1} {x^2 +9} = \frac{1}{3} \arctan \frac{x}{3}\]

Answer 7

actually I think I know what I did, I replaced the 1 with sqrt{3} and 3 lol.

Answer 8

I was wondering why it made no sense :P