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QUESTION 9
The mathematical form of a wave packet formed by
linear superposition of sinusoidal waves with
constant amplitude
A
and wave numbers in the
range k - Akto k + A k Is:
x + Ax
а.
w (x,t) =
Acos (k't- @'t) dk
X- Ax
b.
ck+ Ak
y(x,t) =
Acos (k'x – @'t) dk"
k- Ak
w + Aw
C.
y(x,t) =
Acos (k'x – @ 't) do'
ω-Δω
O d.
y(x,t) =
Acos (k'x – @'t) dt'
1- At

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