f(x)=(3x-4)(cosx)

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Solution for f(x)=(3x-4)(cosx) equation: 


Simplifying
f(x) = (3x + -4)(cosx)

Multiply f * x
fx = (3x + -4)(cosx)

Reorder the terms:
fx = (-4 + 3x)(cosx)

Reorder the terms for easier multiplication:
fx = cosx(-4 + 3x)
fx = (-4 * cosx + 3x * cosx)
fx = (-4cosx + 3cosx2)

Solving
fx = -4cosx + 3cosx2

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 + 3cosx

Simplifying
f = -4cos + 3cosx

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