f(x)=2x-ln(cos(x))

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Solution for f(x)=2x-ln(cos(x)) equation: 


Simplifying
f(x) = 2x + -1ln(cos(x))

Multiply f * x
fx = 2x + -1ln(cos(x))

Multiply cos * x
fx = 2x + -1ln(cosx)

Multiply ln * cosx
fx = 2x + -1clnosx

Reorder the terms:
fx = -1clnosx + 2x

Solving
fx = -1clnosx + 2x

Solving for variable 'f'.

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

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

Simplifying
f = -1clnos + 2

Reorder the terms:
f = 2 + -1clnos

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