Mathematics Homework Solutions

Fourier Series - Convergence

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Fourier Series - Heat Equation - Diff. Eq

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Differentiable Functions - Limit

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Fourier Series for periodic functions

Find the Fourier series as well as the first three partial sums of the Fourier series. F(x)=x-x^2 if -1

Fourier Transforms

(a) Use integration by parts to show that... (see attachment) (b) If a is real and nonzero... (see attachment)

Solve using Fourier transforms and residue calculus

3. The nefarious Evil Corp is dumping radioactive pollutant into a river moving with speed c. Define x to be the downstream coordinate, with the pollutant being injected at x=0... (see attachment for rest of question)

Fourier Transforms

Use the Fourier transform to solve the one-dimensional wave equation. See attached file for full problem description.

Calculating the inverse fourier transform

Calculate the inverse Fourier transform of 1/(w^2+2iw-2) in two ways: using the definition and using partial fractions.

Steady state deflection differential equation

The steady state deflection is given by: y''''+c^4*y=f(x) calculate and plot the deflection for a load: f = 1 for |x|<10, f=0 everywhere else. using Fourier transform. Plot the deflection for various values of c.

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