# arcten2+arctan3

• Jan 22nd 2013, 03:19 AM
Boo
arcten2+arctan3
Dear all!
Please, how do I get that for x>1 all $arctan\frac{x+1}{x-1}+arctan(x)=arctan2 + arctan3$

Many thanks!
• Jan 22nd 2013, 05:52 AM
topsquark
Re: arcten2+arctan3
Quote:

Originally Posted by Boo
Dear all!
Please, how do I get that for x>1 all $arctan\{x+1}{x-1}=arctan2 + arctan3$

Many thanks!

Again, more clarification. x + 1x -1 = 2x - 1. Possibly x^2 + x - 1?

Please edit these before you post!

-Dan