On May 29, 3:33*pm, Angus Hammond <(E-Mail Removed)> wrote:

> Thanks I had tried require complex and Math::sqrt but only separately.

> Thanks again.

> Angus

>

> On 29/05/10 21:03, Jean-Julien Fleck wrote:

>

> > Hello Angus,

>

> > 2010/5/29 Angus Hammond<(E-Mail Removed)>:

>

> >> Is there a way to get an accurate square root?

> >> This means that a negative number should return the appropriate complex

> >> number. I have been having some trouble with this in a program that solves

> >> quadratic equations recently. Ideally but not necessarily it should beable

> >> to get the square root of complex numbers as well.

> >> NB Neither -2**0.5 or Math::sqrt(-2) return appropriate answers. (-2 and an

> >> error respectively)

>

> > require 'complex'

> > include Math

> > c = Complex(-2,0)

> > sqrt(c)

>

> >>> require 'complex'

>

> > => *true

>

> >>> include Math

>

> > => *Object

>

> >>> c = Complex(-2,0)

>

> > => *Complex(-2, 0)

>

> >>> sqrt(c)

>

> > => *Complex(0.0, 1.4142135623731)

>

> > Cheers,

>

>
FYI. For more extensive (and easy) way to add the ability

to find the nth roots of all numerical types check out

my Roots module here:

http://gist.github.com/422636
Jabari