Just reviewing for the AP Test. I can't tell whether my brain isn't working or how to solve this:
integration of [6/(n^2 +1]dx

Question

Just reviewing for the AP Test. I can't tell whether my brain isn't working or how to solve this: 
integration of [6/(n^2 +1]dx

alexwee123 · Answer

HEY IS AP CALC BC HARD?

anonymous · Answer

Some concepts are confusing, but if you actually do the homework, it's not that bad.
It's not exactly an easy class though.

anonymous · Answer

Use the Equation editor to write equation please 
$$\int\limits_{}^{}\frac{6}{(x^2 +1)}dx$$
Is this your question ??

anonymous · Answer

Yes.

anonymous · Answer

do you know a function whose derivative is 
$$\frac{1}{x^2+1}$$ ??

anonymous · Answer

think "inverse trig"

anonymous · Answer

GAH! Trig integration again >.<
I just derped pretty hard there.
Thanks guys =)

anonymous · Answer

what shivam said
it is 
$$\tan^{-1}(x)$$

anonymous · Answer

oh no not hard, you should have the derivatives of inverst trig functions memorized more or less

anonymous · Answer

$$\int\limits\limits\limits_{}^{}\frac{6}{(x^2 +1)}dx= 6\int\limits\limits\limits_{}^{}\frac{dx}{(x^2 +1)}=6 \tan^{-1} x+c$$

anonymous · Answer

rocking that latex!

anonymous · Answer

Yeah. Thanks @satellite73  :)