y = y1 + y2
gunakan rumus trigonometri
cos(A+B) + cos(A-B)
y = 0,5. 2.cos πx/2 cos 20πt
y = cos πx/2 cos 20πt
saat t=2 s dan x=1 m
y = cos π/2.cos 40π
y = 0
Simpangannya nol.
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y = y1 + y2
gunakan rumus trigonometri
cos(A+B) + cos(A-B)
y = 0,5. 2.cos πx/2 cos 20πt
y = cos πx/2 cos 20πt
saat t=2 s dan x=1 m
y = cos π/2.cos 40π
y = 0
Simpangannya nol.