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A little confused on this one...

Find the amplitude and the period of h(x) = 1/2 cos (-πx).

2 answers

as usual,

amplitude = 1/2
period = 2π/π = 2

The - sign doesn't mean anything here, since cos(-x) = cos(x)
I was thinking that was the answer, but I just wasn't sure if those pi's were going to cancel out. Thanks for the confirmation! :)
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