f(1)f(x)=2x

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Solution for f(1)f(x)=2x equation: 


Simplifying
f(1) * f(x) = 2x

Reorder the terms for easier multiplication:
1f * f * x = 2x

Multiply f * f
1f2 * x = 2x

Multiply f2 * x
1f2x = 2x

Solving
1f2x = 2x

Solving for variable 'f'.

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

Divide each side by '1x'.
f2 = 2

Simplifying
f2 = 2

Take the square root of each side:
f = {-1.414213562, 1.414213562}

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