- #1
jahandideh
- 7
- 0
Homework Statement
oh! after trying to re-solve a PDE I reached this:
Homework Equations
[tex]\sum\frac{4}{((2n-1)\pi)^2} (a+\frac{4(-1)^{n+1}}{(2n-1)\pi}) cos(\frac{2n-1}{2}\pi x) [/tex]
n goes feom 1 to [tex]\infty[/tex] and "a" is a constant value.
The Attempt at a Solution
the solution i am trying to reach is:
[tex]=\frac{1}{2} (1-x^{2}+(1-x)a)[/tex]
but i don't know how?
can anyone help please?