Re: stumped on integral


The World Wide Wade wrote:
> In article <OPuCe.156$Qi4.26919@xxxxxxxxxxxxxxxxxxxxx>,
> "Kevin Long" <supermax120@xxxxxxxxxxxxxxxxxx> wrote:
>
> > >> Integral of dy/(cos^3(y))
> > >
> > > Mmmm ... should be dy/(cos^2(y))
> >
> > No, don't think so. Check your algebra.
>
> LOL, have it your way.

Did you change dx to dy properly? If x = sin(y), then
dx = cos(y) * dy, and the cos y cancels with one of the cos(y)'s in the
denominator.

--- Christopher Heckman

.

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