f(x)=-3cos(x)

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Solution for f(x)=-3cos(x) equation: 


Simplifying
f(x) = -3cos(x)

Multiply f * x
fx = -3cos(x)

Multiply cos * x
fx = -3cosx

Solving
fx = -3cosx

Solving for variable 'f'.

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

Divide each side by 'x'.
f = -3cos

Simplifying
f = -3cos

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