f(x)=-4cos(x)-x

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Solution for f(x)=-4cos(x)-x equation: 


Simplifying
f(x) = -4cos(x) + -1x

Multiply f * x
fx = -4cos(x) + -1x

Multiply cos * x
fx = -4cosx + -1x

Solving
fx = -4cosx + -1x

Solving for variable 'f'.

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

Divide each side by 'x'.
f = -4cos + -1

Simplifying
f = -4cos + -1

Reorder the terms:
f = -1 + -4cos

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