f(x)=4cosx+2sinx

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Solution for f(x)=4cosx+2sinx equation: 


Simplifying
f(x) = 4cosx + 2sinx

Multiply f * x
fx = 4cosx + 2sinx

Solving
fx = 4cosx + 2insx

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 + 2ins

Simplifying
f = 4cos + 2ins

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