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 Author Comment/Response Emily 09/10/09 04:58am I'm trying to solve some equations in mathematica and need to make some assumptions about the variables e.g. x is positive. I'm not sure how to do this. As a simple example I tried Assuming[x > 0, Simplify[Solve[x^2 == 9, x]]] expecting to just get the output x=3. However, mathematica gave me the output x=3 and x=-3. How do I get it to solve this equation with x restricted to positive values? URL: ,

 Subject (listing for 'Assumptions') Author Date Posted Assumptions Emily 09/10/09 04:58am Re: Assumptions Bill 09/10/09 5:19pm Re: Assumptions Bill 09/10/09 6:01pm Re: Assumptions Kaveh 09/10/09 8:14pm Re: Assumptions Tom 09/10/09 8:32pm Re: Assumptions tomD 09/13/09 00:23am Re: Assumptions Lothar 09/13/09 04:32am Re: Assumptions Emily 09/15/09 03:02am Re: Re: Assumptions Peter Pein 09/19/09 7:42pm
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