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The two plots below describe a wave on a string traveling in the negative x-direction. Which one of the options below best
describes the wave?
y (m)
y (m)
5
5
4
3
3
2
2
1
1
x (m)
t (s)
-1 0
1
2
4
-1 0
2
3
8
10
-2
-2
-3
-3
-4
-4
-5
-5
O y (x, t) = -4 cos (x + t)
O y (x, t) = -4 cos (2-흥)
O y (x, t) = -4 cos (x + t)
O y (z,t) = -4 cos(좋z-흥이
COS

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