Try
1/ratsimp(1/expr), algebrtaic:true
I'm not on my computer, so I can't test.
-s
On 5/7/08, Ronald Modesitt <rmodesi at msn.com> wrote:
> Hi all, more questions from a newbie reviewing calculus:
>
>
>
> If F(x)=sqrt(x), then
>
> F(x+h) =sqrt(x+h) and
>
> (F(x+h) -F(x))/h = (sqrt(x+h) -sqrt(x))/h.
>
>
>
> To set the numerator to 1 we multiply thru by
>
> sqrt(x+h) + sqrt(x)/((sqrt(x+h) +sqrt(x))
>
>
>
> this yields
>
> 1/(sqrt(x+h) + sqrt(x)).
>
>
>
> My question is this. How do I ask Maxima to set the numerator to a specific
> value, in this case 1?
>
>
>
> Ron
>
>
>
> Ronald F. Modesitt, PE
>
>
>
>
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