Cos(pix)=4x^2-1

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Solution for Cos(pix)=4x^2-1 equation: 


Simplifying
Cos(pix) = 4x2 + -1

Multiply osC * ipx
iopsxC = 4x2 + -1

Reorder the terms:
iopsxC = -1 + 4x2

Solving
iopsxC = -1 + 4x2

Solving for variable 'i'.

Move all terms containing i to the left, all other terms to the right.

Divide each side by 'opsxC'.
i = -1o-1p-1s-1x-1C-1 + 4o-1p-1s-1xC-1

Simplifying
i = -1o-1p-1s-1x-1C-1 + 4o-1p-1s-1xC-1

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