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Simplifying f(x) = (20ln(x)) Multiply f * x 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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