Re: Sqrt[Sin^2(x)]=Sin(x)....????
- To: mathgroup at smc.vnet.net
- Subject: [mg16340] Re: Sqrt[Sin^2(x)]=Sin(x)....????
- From: phbrf at t-online.de (Peter Breitfeld)
- Date: Sun, 7 Mar 1999 01:05:55 -0500
- Organization: das ist ein breites Feld ...
- References: <7bnr1r$dev@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Alessandro Agresti <agresti at fi.infn.it> schrieb: > > Can I get the following result: > Sqrt[Sin^2(x)]=Sin(x) ??? > If so, how?? > Thanks You for Your BIG help. > Alessandro Agresti > Alessandro, Mathematica knows, that this isn't always true. But you can use PowerExpand to get what you want: In[1]= Sqrt[Sin[x]^2]//PowerExpand Out[1]= Sin[x] es gruesst Peter -- =--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--= Peter Breitfeld, Saulgau, Germany (PGP public key: 08548045)