HW 02 Mech 417 
 The suggested reading for the first week gives the hand solution for the
equilibrium of a system of three springs.  The Downloads link gives the 
Matlab script for the same system.  Both references assigned zero 
displacements to the two end nodes (1 and 2).
  Use either Eq 16 of the readings, or the Matlab script to impose new
end displacements and obtain the other three system displacements and
the two system reactions.

  Part 1: Set u_1 = 0 and u_2 = 0.2 m.
  Part 2: set u_1 = 0.2 m and u_2 = 0.

Mech 517:
  In addition to the above two parts use the Matlab script to impose
displacements u_1 = 0.2 m and u_2 = -0.2 m. Obtain the other three system 
displacements and the two system reactions. Obtain the displacement
gradient in spring element 2.  Obtain the element end reactions for
spring 5.