Reading Assignment:
  Today we covered Section 6.1.  You should read it, 
    as well as Section 6.2 which we will cover on Friday.

When reading:
  Section 6.1:
    1) How is the Laplace transform defined?
    2) When does it exist?
    3) Basic examples are numbered 4,5 & 6
  Section 6.2:
    How do we use the Laplace transform to solve an IVP?
      In particular, what is the importance of Theorem 6.2.1?    
  Additionally, start building a list of properties of the
    Laplace transform; all we know up to this point is
    1) it is linear
    2) Theorem 6.2.1 concerning derivatives

Problems (due Monday 2/23):
  Section 7.9 : Consider the system  (page 412 #10)
                   dx    (-3   root{2})    (1)
                   -- =  (            )x + ( )e^{-t}
                   dt    (root{2}  -2 )    (1)
          1) Solve the associated homogeneous system
          2) Solve given non-homogeneous system using the
               method of variation of parameters
          3) Solve given non-homogeneous system using the
               method of undetermined coeffecients
          4) Make sure the answers you got in 2) and 3) agree.
  Section 6.1 : 5ab,6,7,15,16