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y = 10 sin (0,4πt - 0,5πx)
ditanyakan
T = ?
Jawab :
y = A sin (ωt+kx)
sehingga
y = 10 sin (0,4πt - 0,5πx)
A = 10
ω = 0,4π
k = -0,5π
ω = 2π/T
0,4π = 2π/T
T = 2π/0,4π
T = 5 s