2cos(4x)=-1

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Solution for 2cos(4x)=-1 equation: 


Simplifying
2cos(4x) = -1

Remove parenthesis around (4x)
2cos * 4x = -1

Reorder the terms for easier multiplication:
2 * 4cos * x = -1

Multiply 2 * 4
8cos * x = -1

Multiply cos * x
8cosx = -1

Solving
8cosx = -1

Solving for variable 'c'.

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

Divide each side by '8osx'.
c = -0.125o-1s-1x-1

Simplifying
c = -0.125o-1s-1x-1

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