f(x)=x^3*cos(x)

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


Simplifying
f(x) = x3 * cos(x)

Multiply f * x
fx = x3 * cos(x)

Multiply x3 * cos
fx = cosx3 * x

Multiply cosx3 * x
fx = cosx4

Solving
fx = cosx4

Solving for variable 'f'.

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

Divide each side by 'x'.
f = cosx3

Simplifying
f = cosx3

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