1 1
------- -------
Sqrt[2] Sqrt[2]
1 1
-(-------) -------
Sqrt[2] Sqrt[2]
![[Graphics:1230f97.ansq4gr2.gif]](1230f97.ansq4gr2.gif)
![[Graphics:1230f97.ansq4gr9.gif]](1230f97.ansq4gr9.gif)