 BSU
Math 333 (Differential Equations w/ Matrix Theory)  Section 031,
Summer 2011


Instructor:
Shari Ultman

email:
shariultman@boisestate.edu

Office:
Math/Geoscience
Building, Room 236D

Office
hours: MTuWTh
11:3012:30,
and by appointment.


My
Weekly Schedule


Return
to Homepage
 Syllabus


Calendar


Assignments:
These problems are to be turned in for a grade.


Supplemental
exercises: These exercises provide extra practice on the basic
methods and concepts covered in a given section. You should complete
as many as necessary to master the given technique. They will not be
graded. Do not turn these
in.


Keys
to quizzes and exams 

Basic
derivatives and integrals


Basic
table of Laplace transforms


Partial
fraction decomposition


Exam
1 review (final version  revised)


Exam
2 review (final version)


Final
exam review (final version)


 Links:


Slope
Field Calculator: created by Marek
Rychlik at the University of Arizona.


 Announcements:


Sat 7/23: For
problems #19, 20 in section 8.5, don't worry about Proposition 5.12.
Just use the Wronskian to determine linear dependence/independence.

Tues 7/19: We are
officially one day behind on the calendar. This means Thursday's
quiz (and Assignment 10, due on Thursday) will be over sections 8.1
and 8.4 only. This means you should be able to determine whether or
not a given vector of functions is a solution to a system of
differential equations, you should be able to write a system of
first order linear equations in matrix/vector form, you should be
able to convert a higherorder equation into a system of firstorder
equations, and you should be able to analyze and set up a
differential equation that models a multitank "mixing"
problem (as discussed in class today). NB: you are not
expected to be able to solve systems of equations, because we
haven't yet discussed how to solve 'em.

As far as changes
to the calendar: my plan is to cover sections 8.5, 9.1 and possibly
part of 9.2 tomorrow (Wednesday) and finish section 9.2 on Thursday.
Next week (Monday and possibly part of Tuesday) we'll look at either
section 9.3 or 9.5 (or both).

Mon 7/18: The stats
for the first two exams:

Exam 1 (total
points possible: 60):

mean: 44.08
points

median: 48
points

standard
deviation: 12.29 points
 Exam 2
(total points possible: 60):

mean: 46.3
points

median: 47
points

standard
deviation: 8.19 points

Sat 7/9: There's a
typo in section 7.1 #30: should be "2v_2 + 4v_3 + 5v_4",
not "2v_2 + 4v_3 + 5x_4".

Thurs 7/7: In class
today, we did not get to an example of a system having no solutions.
The example I would've used is here.

Wed 6/29: A few
announcements: I have posted a revised version of the table of
Laplace transforms. You may use this table for exams and quizzes;
you are also allowed to add more entries to the table. Homework for
section 5.5 (due next Thursday, 7/7) has been posted. In class
tomorrow after the quiz, we will briefly discuss the Laplace
transform of the Dirac delta function. The second half of class will
be dedicated to questions and work on problems (since we didn't get
to it today).

Mon 6/27: If you do
not know how to do proof by induction, you may ignore part (c) of
problem 11 in section 5.1. If you do know how to it, you should try
it. (We don't want all that hard work you put into learning it to go
to waste, do we?)

Mon 6/27: Regarding
assignment 6: the material to which problems #27,
28, 31, 32, 34, 37 in
section 5.2 correspond will be covered in tomorrow's class.

Mon 6/20: Evan
Rust, the tutor from the College of Engineering who introduced
himself earlier this semester, is available to meet with Math 333
students at BUSN 301 (the Business building, next to the
Math/Geoscience building) on:

Tuesdays 24

Wednesdays 13

Thursdays
35
 Mon 6/20: The section of the exam
review concerning the methods for solving inhomogeneous second order
linear equations has been (slightly) revised.

Sat 6/18: The final version of the review for the first exam has
been posted.

Sat 6/18: The first part of the review for the first exam (covering
first order equations) has been posted. The full review will be
posted later today.

Thurs 6/16: Assignment 4 has been edited. Problems from section 4.4
will not be included in this assignment.

Sun 6/12: Assignment 2 has been edited. Problem #11 from section 2.5
has been dropped. The issue is that the integrating factor has a
term for which you will not be able to find a closedform
antiderivative, and I do not know if everyone has access to a
numerical solver (either a sufficiently advanced calculator or a
computer program like Matlab). I do ask, however, that you read the
problem and try to understand what the fundamental difference is
between the flow rates r in problem #11 vs. that in problem
#9.

Thurs 6/9: Tomorrow (Friday 10 June) is the last day to drop this
class without a ``W'' appearing on your transcript.

Tues 6/7: ``Constants voodoo'' detailed here
using the example from the end of today's class (motion with air
resistance).

Mon 6/6: Information on tutoring is available here.

Sun 6/5: The course webpage is up and running. Let me know if there
are problems with any of the links. Please look at the syllabus and
calendar: you may want to bring a copy of the syllabus to class on
Monday. Also, please bring an extra notebook and a marker
(darkcolored, please) to class beginning Tuesday 6/7. This should
be separate from the notebook you are using for class notes. I'll
explain why on Monday.

Wed 5/11: Welcome to Math 333.