How do you graph $y = 5 cos 4 x$ $y=5cos4x$ ?

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Answer 1 · 2016-10-18T23:05:57

graph{5cos(4x) [-10, 10, -6, 6]}

The graph of $y = cos x$ $y= cos x$ is as follows:
graph{cosx [-10, 10, -6, 6]}

The graph of $y = cos 4 x$ $y= cos 4x$ is that graph compressed along $O x$ $Ox$ with factor 4:
graph{cos(4x) [-10, 10, -6, 6]}

The graph of $y = 5 cos x$ $y= 5cos x$ is that graph scaled along $O y$ $Oy$ with scale factor 5:
graph{5cos(4x) [-10, 10, -6, 6]}

How do you graph y=5cos4xy=5cos4x?