The Homepage of

     Math 251 Sections 6, 11, 12, and 13     

     Spring Semester, 2013      

 

 
 

 
Instructor

Zachary S. Tseng
410 McAllister Building
(814) 865-1401
tseng@math.psu.edu

Mailbox: 109 McAllister

Office Hours:

Monday: 5:45 to 6:35 PM, Wednesday: 12:20 - 1:10 PM

 
Quiz/Homework grader:   Chelci Mannarino         cem5394@psu.edu

 
Class times and locations:

 
MATH 251.6
M WRF 01:25PM - 02:15PM  322 HHD East
 
MATH 251.11
M WRF 04:40PM - 05:30PM  101 Osmond Lab 
 
MATH 251.12
M WRF 02:30PM - 03:20PM  108 Henderson Bldg
 
MATH 251.13
M WRF 03:35P - 04:25P  101 Osmond Lab 


 
 

ANNOUNCEMENT

General: A public service announcement... Here is the Homework and Quiz Submission Guideline. Please read the rules carefully and follow them when submitting your assignments (as well as during an exam).

Another PSA: The Penn State Learning offers free peer tutoring (walk-in, no appointment is required). It is a great resource if you ever need help for the course but are unable to make my office hours. Check out their website for hours and locations: Penn State Learning - free on-campus peer tutoring

1-7-2013: Assignment #1 will be given in class on Friday, January 11. It is due at the beginning of the class on Thursday, January 17.

The first 2 sets of lecture notes + a review (reprints of my transparencies):
Intro. and part 1 of Chapter 2
The rest of Chapter 2 lecture notes on first order differential equations
Review of Partial Differentiation

In-class worksheet set 1
This is the first set of in-class worksheet. It is basically your ready-made class notes. In addition to giving you something to do while in class, it also serve as a lecture outline, a source of extra examples and exercises, and an exam study guide (generally it is a safe bet that items/concepts/formulas appearing on the worksheet are, somewhat, more important than those only appear in the online lecture notes but not on the worksheet).

Assignment #2 will be given in class on Friday, January 18. It is due at the beginning of the class on Thursday, January 24.

Assignment #3 will be given in class on Friday, January 25. It is due at the beginning of the class on Thursday, January 31.

1-9-2013: The class Facebook group: for class and homework online technical support and general discussions of anything related to the course.

1-11-2013: Effective immediately, the meeting location for section 11 (4:40 to 5:30pm) is moved from room 110 to room 101 Osmond Lab.

1-23-2013: In-class worksheet set 2 - the second set of the in-class worksheet, covering sections 3.1 through 4.2.

Lecture notes for Chapters 3 and 4:
Second Order Linear Equations, Part 1 - homogeneous equations
Second Order Linear Equations, Part 2 - Nonhomogeneous Linear Equations
Mechanical Vibrations
Higher Order Linear Equations

Assignment #4 will be given in class on Friday, February 1. It is due at the beginning of the class on Thursday, February 7. Assignment #5 will be given in class on Friday, February 8. It is due at the beginning of the class on Thursday, February 14.

If you have a scheduling conflict for midterm exam 1 and need to arrange to take either the conflict exam (same day as the regular exam, but from 5:05 to 6:20pm), or the make-up exam (on Wednesday, February 27, from 6:30 to 7:45pm), please come to see me before or after class.

2-6-2013: Assignment #6 (exam I review, you can start on it now): Due at the beginning of the class on Thursday, February 21. Do the following:
Sample exam from Spring 2012 and Fall 2012 (answer keys are available):
Exam I, Spring 2012    answer key
Exam I, Fall 2012    answer key
Do all necessary steps for the partial-credit problems, show all work or sufficient reasoning to justify your answers to the multiple-choice / matching / true-or-false / short-answer questions.

Also recommended: Sample exams from Summer 2012, Fall 2011, Summer 2011, Spring 2011, and Fall 2010. Assignment #7 will be given in class on Friday, February 22. It is due at the beginning of the class on Thursday, February 28.

2-13-2013: Midterm Exam I study guide

Assignment #8 will be given in class on Thursday, February 28. It is due at the beginning of the class on Thursday, March 14. Assignment #9 will be given in class on Friday, March 15. It is due at the beginning of the class on Thursday, March 21.

2-14-2013: The Penn State Learning (the folks at 007 Sparks) will be holding a Math 251 exam review session, lead by student peer tutors, on Tuesday, February 19, starting at 7:00 pm in room 022 Deike Building.

2-15-2013: Notes, worksheet, and more, on Laplace Transforms (Chapter 6):
In-class worksheet set 3 - covering Laplace transforms, sections 6.1 through 6.5.
Laplace Transforms, part 1
Laplace Transforms, part 2
Laplace Transforms, part 3
Partial fractions review notes
Table of basic Laplace Transforms

2-27-2013: The deadline to file for taking a conflict final exam is this Sunday, March 3. Conflict exam is handled directly by the University Registrar's Office, rather than through me or the Math Department. Go to ELion for more detail.

Assignment #10 will be given in class on Friday, March 22. It is due at the beginning of the class on Thursday, March 28.

3-11-2013: Here is an experimental how-to guide of using the second translation theorem of Laplace transforms, that I mentioned in a couple of my sections, using examples with color-coded parts. (It works better if you print it out in colors.)

Notes, worksheet, and a reference chart, on chapters 7 and 9, they cover the rest of the topics that are going to be on the second midterm exam:

In-class worksheet set 4 - covering systems of differential equations, and phase portraits (Chapters 7 and 9).
Systems of First Order Linear Equations
Phase portraits; Nonlinear Systems
Predator-prey Equations
Phase portrait reference chart

If you have a scheduling conflict with our second exam and need to arrange to take either the conflict exam (same day as the regular exam, but from 5:05 to 6:20pm), or the make-up exam (on Monday, April 8, from 6:30 to 7:45pm), please come to see me before or after class. The deadline for signing up for taking the conflict exam for the second midterm is March 26. Please be advised, in case you need to sign up for the make-up exam, that the make-up exam will be held AFTER the late-drop deadline (which is Friday, April 5), please consider this fact as it might affect your decision regarding signing up to take the make-up exam.

3-18-2013: Assignment #9, originally scheduled to be due on Thursday, March 21, is POSTPONED until Friday, March 22.

The Penn State Learning will be holding a Math 251 exam II review session, lead by student peer tutors, on Sunday, March 31, starting at 3:00 pm in room 060 Willard Building.

3-22-2013: Assignment #11 (exam II review, you can start on it now): Due at the beginning of the class on Thursday, April 4. Do the following:
Sample exam from Summer 2011 and Fall 2012 (answer keys are available):
Exam II, Summer 2011    answer key
Exam II, Fall 2012    answer key
Do all necessary steps for the partial-credit problems, show all work or sufficient reasoning to justify your answers to the multiple-choice / matching / true-or-false / short-answer questions.

Also recommended: Sample exams from Summer 2012, Spring 2012, Fall 2011, Spring 2011, Fall 2010, Spring 2009, Fall 2008.

Assignment #12 will be given in class on Friday, April 5. It is due at the beginning of the class on Thursday, April 11.

3-25-2013: Midterm Exam II study guide

Here is a set of exam II review formula sheets made by a fellow student back in 2011. I include it here because it might proved to be helpful to you as well. Note that it includes mechanical vibrations and higher-order linear equations, which will not be on the second exam (the first exam covered those topics)

3-27-2013: Notes and worksheet on Chapter 10 - Partial Differential Equations:
In-class worksheet set 5 (chapter 10) - partial differential equations
Part 1 (10.1 and 10.5) - introduction, separation of variables, 2-point boundary value problems, eigenvalues and eigenfunctions
Part 2 (Fourier Series: 10.2, 10.3, and 10.4) - Fourier series, Fourier convergence theorem, even and odd periodic functions
Fourier Series summary (the bare minimum version of part 2 above)
Summary sheet of common simple 2-point BVPs
Part 3 (10.6 + summaries) - heat conduction problems, nonhomogeneous boundary conditions, steady-state solution
Part 4 (10.7 and 10.8, plus incomplete optional topics section) - wave equations, Laplace/potential equation

4-11-2013: Assignment #13 will be given in class on Friday, April 12. It is due at the beginning of the class on Thursday, April 18.

How the 100-point homework score is calculated: There are going to be 13 assignments total, each is worth 10 points. Basically, the top 10 scores are kept, for a total of 100 points. But, there is an exception -- the last 2 assignments (#12 and #13) on PDEs cannot both be dropped. At least one of the 2 scores must be included in the calculation, even if the score were zero. There are 2 reasons for this exception. The first is that PDEs is, literally, the fourth credit (above Math 250's) of the course, so at least one score from a PDE assignments should count. The second is that, in the past many students who had scored well in the first 10 assignments elected to skip the last 2 or 3. Essentially, they decided to ease up on class work during the most difficult part of the course, and at the most critical moment just before the final exam. This complacency usually did not turn out well for the students. Remember, now is not the time to ease up because more than half of the final exam is going to be consisted of PDE / chapter 10 topics. This rule would, hopefully, make sure everyone are to spend sometime studying chapter 10.

In addition to the Penn State Learning's exam review (detail see below), I will personally have a review session on Sunday, April 28, from 1:00 to 3:30pm, in room 262 Willard.

4-22-2013: Penn State Learning's peer-lead review session detail: this Saturday, April 27, starting at 12:00pm, in 104 Thomas Bldg. So there are 2 review sessions this weekend, mine on Sunday at 1 pm, and Penn State Learning's on Saturday at 12 pm.

Final Exam study guide

Suggested sample final exams: first do the following - Fall 2012, Spring 2012, Summer 2011, Fall 2010, Spring 2009; then you can also try - Fall 2011, Spring 2011, Spring 2010 (answer keys available to all).

 


 
 
Math 251 Information

Course syllabus

Sample Exams

Additional Sample Exams (Math 250)

Penn State Learning - free on-campus peer tutoring

 

Upcoming Events
 
 
Final Exam

Date: Monday, April 29

Time: 4:40 to 6:30 PM

Location: 121 Sparks

Format: A mixture of multiple-choice, short-answer, true-or-false, and partial-credit questions, for 150 points

 
Calculators are NOT allowed during the exam.

Grading Policy

Total of 450 points:

100 pts - Midterm I
100 pts - Midterm II
150 pts - Final Exam
100 pts - Quizzes/Homework

 
READ! Eberly College of Science's statement/policy regarding Academic Integrity

 

MATH 250/251 Resource

Tools and info for and about differential equations.

 

Calculus Reference Resource

 
 

Useful Links

Some Math resource on the web:

 


Send any question/comment about this page to: tseng@math.psu.edu

Last modified: April 22, 2013