These were the last two questions in a tutorial I had today but ran out of time before reaching them. Sadly answers dont get posted to the tutorials so I'm unsure on how to do these:

**e) Find the Green’s function:**

**ODE:** $$\frac{d^2}{dx^2}$$g(x, s) − g(x, s) = δ(x − s), 0 < x < 1,

**BC:** g(0, s) = g(1, s) = 0.

**f) Use the Green's function to solve:**

**ODE:** u''− u = 1, 0 < x < 1,

**BC: **u(0) = u(1) = 0.

Brodudedoodebrodude May 24, 2015