PROBLEM 1:
Verify thatAEL
Is given by the condition
for the problem illustrated:
![2059_Elastic foundation2.png](https://secure.tutorsglobe.com/CMSImages/2059_Elastic%20foundation2.png)
PROBLEM 2:
The rigid bar ij of length L rests on an elastic foundation. When displaced vertically by v the foundation applies a force f=Kvdx to a length dx of the bar. K is constant find the 2x2 stiffness matrix
![915_Elastic foundation3.png](https://secure.tutorsglobe.com/CMSImages/915_Elastic%20foundation3.png)
PROBLEM 3:
For the governing equation ∂u/∂x + 20 - 16x = 0 in the range 0
1. Determine a1 and a2 for the approximating polynomial u-=a1x+a2 x2
2. The percentage errors at x=0.5 and x=0.7 compared to the exact solution of u = 4(e(-2x)-1)+8x