Mystery Sinusoid
Quiz: Mystery Sinusoid
2.5
2
1.5
1
0.5
t
0
-0.5
-1
-1.5
-2
-2.5
-2
-1
0
1
2
3
4
5
6
7
Fig. 1. Mystery sinusoid.
The graph of a sinusoidal function is displayed. The problem is to ex­
press it in the standard form
f (t) = A cos(ωt − φ).
Think about your answer and then look at the choices.
8
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18.03SC Differential Equations��
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