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Re: Do loop is faulty


You need to specify a range for the Do loop.

Do[c[i]=NIntegrate[a[i]*x*Sin[b[i]*x],{x,0,b[i]}],{i,10}]




dumb_founded wrote:

>I define array a[i] and array b[i] of dimension 10.  Then I go through
>the following Do loop, or try to, that is.
>
>
>Array[c,10];
>Do[c[i]=NIntegrate[a[i]*x*Sin[b[i]*x],{x,0,b[i]}]
>
>I get numerous error messages saying that b[i] is not a valid limit of
>integration.
>
>This is sheer headache.  I will never try to use Mathematica for
>numerical analysis again.
>
>All your efforts on this matter are sincerely appreciated.
>
>
>
>Thanks
>
>  
>


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