f(x)=4ln(5x)

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Solution for f(x)=4ln(5x) equation: 


Simplifying
f(x) = 4ln(5x)

Multiply f * x
fx = 4ln(5x)

Remove parenthesis around (5x)
fx = 4ln * 5x

Reorder the terms for easier multiplication:
fx = 4 * 5ln * x

Multiply 4 * 5
fx = 20ln * x

Multiply ln * x
fx = 20lnx

Solving
fx = 20lnx

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 20ln

Simplifying
f = 20ln

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