f(x)=3*cos(4*x)+4

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Solution for f(x)=3*cos(4*x)+4 equation: 


Simplifying
f(x) = 3cos(4x) + 4

Multiply f * x
fx = 3cos(4x) + 4

Remove parenthesis around (4x)
fx = 3cos * 4x + 4

Reorder the terms for easier multiplication:
fx = 3 * 4cos * x + 4

Multiply 3 * 4
fx = 12cos * x + 4

Multiply cos * x
fx = 12cosx + 4

Reorder the terms:
fx = 4 + 12cosx

Solving
fx = 4 + 12cosx

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 4x-1 + 12cos

Simplifying
f = 4x-1 + 12cos

Reorder the terms:
f = 12cos + 4x-1

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