Manipulating square roots
- To: mathgroup at smc.vnet.net
- Subject: [mg112341] Manipulating square roots
- From: alan <alansbarnett at verizon.net>
- Date: Fri, 10 Sep 2010 04:48:07 -0400 (EDT)
How can I get mathematica to bring a factor inside a square root? For instance a Sqrt(1-(b/a)^2) -> Sqrt(a^2-b^2) (if a is real and a > 0). Also, how do I get Mathematica to perform the operation in reverse?