Y=cos^2(3x)

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Solution for Y=cos^2(3x) equation: 


Simplifying
Y = cos2(3x)

Remove parenthesis around (3x)
Y = cos2 * 3x

Reorder the terms for easier multiplication:
Y = 3cos2 * x

Multiply cos2 * x
Y = 3cos2x

Solving
Y = 3cos2x

Solving for variable 'Y'.

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

Simplifying
Y = 3cos2x

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