I have an interpolating function in mathematica and just want to find when it takes a certain value, seems simple, but I can't do it.(adsbygoogle = window.adsbygoogle || []).push({});

i.e. I solved an equation numerically for z(rho) and got interpolating function x for z.

Now I want to know for which value of rho, z(rho)=1 for example.

Anyone know how?

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# Using interpolating functions in Mathematica

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