Math 2174, Spring 2024, Final Project
Besides the theorems in the lecture notes, you may use the following equations without proof:
If k ≠ 0,
1. Function f(x) satisfies f(x + 2) = f(x), and
(a) (6 points) Sketch f(x) in the interval [−3, 3].
Open and/or closed circles should be distinguishable from each other.
In particular, at each of x = −3, −2, −1, 0, 1, 2, 3, the unique value off(x) should be clear from the sketch.
(b) (10 points) Find the Fourier series *(x) of f(x).
When computing coefficient(s), do NOT separate into even and odd cases.
(c) (6 points) Sketch *(x) in the interval [−3, 3].
Open and/or closed circles should be distinguishable from each other.
In particular, at each of x = −3, −2, −1, 0, 1, 2, 3, the unique value off(x) should be clear from the sketch.
(d) (6 points) Use your answers above to compute the infinite sum
2. A thin metal rod R1 of length 1cm lies horizontally with insulated ends. Its temperature p(x,t) at point x along the rod at time t obeys the Heat Conduction equations with homogeneous boundary conditions:
Suppose p(x,t) is given by
The temperature u(x,t) of an identical rod R2 obeys the same equations except at its right end, which is insulated at 3 degrees:
(a) (4 points) Find the steady-state temperature distribution v(x) of R2.
(b) (6 points) Use (Eq1) to find dn = 2 l01 f(x)sin(nπx) dx.
(c) (10 points) Use your answers above to find the transient temperature distribution w(x,t) of R2. When computing coefficient(s), do NOT separate into even and odd cases.
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