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Re: How to force numeric output

  • To: mathgroup at smc.vnet.net
  • Subject: [mg115650] Re: How to force numeric output
  • From: "Sjoerd C. de Vries" <sjoerd.c.devries at gmail.com>
  • Date: Mon, 17 Jan 2011 05:40:26 -0500 (EST)
  • References: <igrqb1$qmq$1@smc.vnet.net> <iguirf$8tl$1@smc.vnet.net>

If you captitalize the functions ***AND*** remove the point after the
x everything should work fine. No need for Assuming or whatsoever.

What you are refering to as a similar problem has absolutely nothing
to do with your case.

Cheers -- Sjoerd


kOn Jan 16, 11:55 am, KenR <ramsey2... at msn.com> wrote:
> On Jan 15, 4:45 am, KenR <ramsey2... at msn.com> wrote:
>
> > I am new to Mathematica and cant seem to get it to give a numeric
> > answer to
>
> >  input    y = 5; x = floor[sqrt[y+1.0]]; x.
>
> > instead of a numeric it gives "out floor[sqrt[6.0]]"
>
> > what am I doing wrong?
>
> > I have Mathematica 8.0
>
> > Thankyou, Kenneth Ramsey
>
> I was looking at past posts and came upon a similar situation.  Thanks
> to those who e-mail me I am aware that the functions Floor and Sqrt
> must be capitalized.  It still apparently will not work because
> Mathematica does not know whether a positive or negative answer is
> desired.
>
> A similar situation was posted below where the sqrt of meter^2 etc was
> desired. A reader responded to write the code "Assuming[
> {Positive[Meter], Positive[Second]},
>   Refine[(Sqrt[Meter^2/Second^2] Second)/Meter^2]
>
> How would I invoke a similar solution to my case?



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