f(x)=9*ln(x)-4

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Solution for f(x)=9*ln(x)-4 equation: 


Simplifying
f(x) = 9ln(x) + -4

Multiply f * x
fx = 9ln(x) + -4

Multiply ln * x
fx = 9lnx + -4

Reorder the terms:
fx = -4 + 9lnx

Solving
fx = -4 + 9lnx

Solving for variable 'f'.

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

Divide each side by 'x'.
f = -4x-1 + 9ln

Simplifying
f = -4x-1 + 9ln

Reorder the terms:
f = 9ln + -4x-1

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