-2cos(2x)=y

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Solution for -2cos(2x)=y equation: 


Simplifying
-2cos(2x) = y

Remove parenthesis around (2x)
-2cos * 2x = y

Reorder the terms for easier multiplication:
-2 * 2cos * x = y

Multiply -2 * 2
-4cos * x = y

Multiply cos * x
-4cosx = y

Solving
-4cosx = y

Solving for variable 'c'.

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

Divide each side by '-4osx'.
c = -0.25o-1s-1x-1y

Simplifying
c = -0.25o-1s-1x-1y

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