f(x)=(9X)cos(x)

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Solution for f(x)=(9X)cos(x) equation: 


Simplifying
f(x) = (9X) * cos(x)

Multiply f * x
fx = (9X) * cos(x)

Remove parenthesis around (9X)
fx = 9X * cos(x)

Multiply X * cos
fx = 9cosX * x

Multiply cosX * x
fx = 9cosxX

Solving
fx = 9cosxX

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 9cosX

Simplifying
f = 9cosX

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