- #1

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[tex]y(x) = a + bx^{-2} + cx^{-4} + dx^{-6}[/tex]

I now need to calculate x for a given y and have no idea how to go about rearranging this function.

I need to find x for a lot of y values, so I was hoping to write something in methematica, but I need to understand how to rearrange it before I can implement it in mathematica.