306X Homework, Fall 2002

306X Homework #3 due beginning of class, Thursday, Sep 19, 2002.

Problems are from Blanchard, Devaney, and Hall, 2nd ed., unless otherwise noted.


[1.4] A numerical technique: Euler's method

1.  Do it by hand.
6.  Use Maple. (You may find this a bit of a challenge until after Lab 3.)
11. Comparison of Euler (on 6) with qualitative analysis.


[1.6] Phase line for autonomous DEs
X.   Problem on rhino sparsity. (Handout in class Thursday 9/12.)

[1.7] Bifurcation
3.   But change the - to a +.
     (Location of bifurcation values and sketches of phase lines.)
     Sketch a full bifurcation diagram too.

[1.8] Linear DEs
2.   (General solution.)
14.  (Solution of IVP.)
16.  (General solution with as many integrals done as possible.)
     Note: if you don't have a table of integrals handy, Maple
     might be helpful: syntax for indefinite integral is "int( x^2, x );".