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October 20, 2014

October 20, 2014

Posted by **John** on Thursday, June 20, 2013 at 9:37pm.

find g(-x)

- Differential Calculus (first part) -
**Reiny**, Thursday, June 20, 2013 at 10:36pmbecause of the symmetry about the y-axis of the cosine function,

cos(x) = cos(-x)

so g(-x) = cos (2(-x)) = cos (2x)

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