In: Advanced Math
Problem #1 :
Using separation of variables and the formalism demonstrated in class, find the general solution to the Helmholtz equation (also known as the time independent wave equation) :
∇^2 F + k^2 F = 0
Assume that k is a real number. For clarification, the general solution is the solution in the case where boundary conditions are not specified.
Problem #2 :
Express the following functions as an infinite Fourier sine series using sin(nπx/a)
a)f(x) = x
b)f(x) = e^x
c)f(x) = cos(x)