[SciPy-User] Return variable value by function value

[josef.pktd at gmail.com]

On Fri, Aug 26, 2011 at 1:25 PM, Kliment <otrov at hush.ai> wrote:
> Hello,
>
> this will be very simple to any of you I guess, but I don't know
> well numpy.
>
> I declare "x = arange(1,100)" and "y = sqrt(1 - x**2/10E+4)"
> How can I return x value when y = 0.95 for example?
>
> I hope I don't have to transform y equation by x as I know that and
> expect some more strait approach

numerically: scipy.optimize rootfinding, fsolve, brentq, ... see docs

Josef

>
>
> Thanks for your time
>
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