For the Graph of a Circular Function Y = F(x) $\cos ^ { 2 } 4 x - \sin ^ { 2 } 4 x$

question 118

Multiple Choice

For the graph of a circular function y = f(x) , determine whether f(-x) = f(x) or f(-x) = -f(x) is true.
- $\cos ^ { 2 } 4 x - \sin ^ { 2 } 4 x$

• A) \(\cos 4 x\)
• B) \(2 \sin 4 x\)
• C) \(\frac { 1 } { 2 } \sin 16 x\)
• D) \(\cos 8 x\)

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