Whispering galleries are rooms designed with elliptical ceilings. A person standing at one focus can whisper and be heard by a person standing at the other focus because all the sound waves that reach the ceiling are reflected to the other person. If a whispering gallery has a length of 120 feet and the foci are located 30 feet from the center, find the height of the ceiling at the center.
Whispering galleries are rooms designed with elliptical ceilings. A person standing at one focus can whisper and be heard by a person standing at the other focus because all the sound waves that reach the ceiling are reflected to the other person. If a whispering gallery has a length of 120 feet and the foci are located 30 feet from the center, find the height of the ceiling at the center.
Whispering galleries are rooms designed with elliptical ceilings. A person standing at one focus can whisper and be heard by a person standing at the other focus because all the sound waves that reach the ceiling are reflected to the other person. If a whispering gallery has a length of
120
feet
and the foci are located
30
feet
from the center, find the height of the ceiling at the center.
Use Euler's method with step size h = 0.1 to approximate the solution to the initial value problem y' = x - y², y(3) = 0, at the
points x = 3.1, 3.2, 3.3, 3.4, and 3.5.
2. Let f(x) = 2x² + 6. Find and completely simplify the rate of change on the interval [3,3+h].
(5 points)
Q4.
a)
A periodic waveform f(t) is shown in Figure 2
f(t)
Vo
Figure 2
T
with f(t+mT) = f(t) and m is an integer. Also, V₁ = 3, t = 1, T = 2.
(i)
(ii)
Derive the formulae for the complex Fourier coefficients c for f(t).
Sketch the amplitude spectrum of ƒ (t) (including the components up to
n = ±3).
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