Re: problem in operation

[Oliver Heimlich]

Am 26.03.2015 um 20:05 schrieb Yonghua Liu:
> m=linspace(1,8,0.1);
>
> y=2**m -operation get error information
>
> y=exp(0.69315*m)- work fine.
>
> What is wrong wit ** operation?
>
> Thank you very much
>
> Yonghua

Yonghua,

you sure that m=linspace(1,8,0.1); is correct? It returns simply 8 for 
me and everything else works. Which version of GNU Octave are you using?

** (as well as ^) is the operator for the matrix power function 
“mpower”. You probably want to compute an element-wise power function:

2^1.0, 2^1.1, 2^1.2, …

This can be done with the .** (or .^) operator or equivalently with the 
“power” function.

Oliver