f(x)=2tgx-ctgx

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Solution for f(x)=2tgx-ctgx equation: 


Simplifying
f(x) = 2tgx + -1ctgx

Multiply f * x
fx = 2tgx + -1ctgx

Reorder the terms:
fx = -1cgtx + 2gtx

Solving
fx = -1cgtx + 2gtx

Solving for variable 'f'.

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

Divide each side by 'x'.
f = -1cgt + 2gt

Simplifying
f = -1cgt + 2gt

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