f(x)=-cos(2x)-sin^2x

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Solution for f(x)=-cos(2x)-sin^2x equation: 


Simplifying
f(x) = -1cos(2x) + -1sin2x

Multiply f * x
fx = -1cos(2x) + -1sin2x

Remove parenthesis around (2x)
fx = -1cos * 2x + -1sin2x

Reorder the terms for easier multiplication:
fx = -1 * 2cos * x + -1sin2x

Multiply -1 * 2
fx = -2cos * x + -1sin2x

Multiply cos * x
fx = -2cosx + -1sin2x

Solving
fx = -2cosx + -1in2sx

Solving for variable 'f'.

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

Divide each side by 'x'.
f = -2cos + -1in2s

Simplifying
f = -2cos + -1in2s

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