Y=cos(3x)

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Solution for Y=cos(3x) equation: 


Simplifying
Y = cos(3x)

Remove parenthesis around (3x)
Y = cos * 3x

Reorder the terms for easier multiplication:
Y = 3cos * x

Multiply cos * x
Y = 3cosx

Solving
Y = 3cosx

Solving for variable 'Y'.

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

Simplifying
Y = 3cosx

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