2009-11-20, 05:25 AM
Find ![[Image: y8okadx.png]](http://mathurl.com/y8okadx.png)
It's 1/2 but I wonder if there's an easier way than mine.
![[Image: y8okadx.png]](http://mathurl.com/y8okadx.png)
It's 1/2 but I wonder if there's an easier way than mine.

