f(X)=9xln(5x)-9x

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Solution for f(X)=9xln(5x)-9x equation: 


Simplifying
f(X) = 9xln(5x) + -9x

Multiply f * X
fX = 9xln(5x) + -9x

Remove parenthesis around (5x)
fX = 9lnx * 5x + -9x

Reorder the terms for easier multiplication:
fX = 9 * 5lnx * x + -9x

Multiply 9 * 5
fX = 45lnx * x + -9x

Multiply lnx * x
fX = 45lnx2 + -9x

Solving
fX = 45lnx2 + -9x

Solving for variable 'f'.

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

Divide each side by 'X'.
f = 45lnx2X-1 + -9xX-1

Simplifying
f = 45lnx2X-1 + -9xX-1

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