Re: x^y question

[Peter Cloetens]

I think Octave is right and you probably want your power operator to act
on the elements of x, not on the matrix x.
Use:
y = x.^2 + 2*x + 10 ;

On Wed, 2006-12-06 at 11:44 +0100, huub wrote:
> Hi,
> 
> I'm trying to plot a couple of simple functions like y = x^2 + 2*x + 10, 
> but I got these errors:
> 
> error: for A^b, A must be square
> error: evaluating binary operator `^' near line 4, column 7
> error: evaluating binary operator `+' near line 4, column 10
> error: evaluating binary operator `+' near line 4, column 14
> error: evaluating assignment expression near line 4, column 4
> error: called from `test' in file `/home/huub/test.m'
> 
> When reading the online manual, I notice 2 things:
> - the main topic is matrices
> - the power-operator (^ and **) implementation needs improvement
> 
> Can I plot simple functions like this using Octave? I tried in Scilab, 
> and have no problems at all.
> 
> Thank you
> 
> Huub
> 
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