RE: How to Multiply Sqrt[a] with Sqrt[b]
- To: mathgroup at smc.vnet.net
- Subject: [mg38149] RE: [mg38134] How to Multiply Sqrt[a] with Sqrt[b]
- From: "Florian Jaccard" <jaccardf at eicn.ch>
- Date: Wed, 4 Dec 2002 03:23:00 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Hello !
Be careful ! Sqrt[a]*Sqrt[b] is not equal to Sqrt[a*b] if a and b are not
real positive !
If you consider a and b real positive, you can tell Mathematica that it is
so :
Simplify[Sqrt[a]*Sqrt[b],{a>=0,b>=0}]
You can also use "PowerExpand"
Meilleures salutations
Florian Jaccard
-----Message d'origine-----
De : Gernot Pfanner [mailto:pfannerg at kfunigraz.ac.at]
Envoyé : mar., 3. décembre 2002 10:35
À : mathgroup at smc.vnet.net
Objet : [mg38134] How to Multiply Sqrt[a] with Sqrt[b]
Hi!
Does somebody know an algorithm to simplify the product Sqrt[a]*Sqrt[b] ?
With many thanks
Gernot