Calculus III (Mathematics UN1201)

Sections 002, 003


Instructor

Gyujin Oh (gyujinoh@math.columbia.edu)

Webpage

https://math.columbia.edu/~gyujinoh/Fall2023.html, and Courseworks.

Time and location

- Section 002: MW 8:40-9:55AM, Location 203 Mathematics

- Section 003: MW 10:10-11:25AM, Location 203 Mathematics

Office hours

Wednesdays 1PM-4PM at 517 Mathematics, and Fridays 9AM-10AM on Zoom (link), or by appointment (in person or online meetings available).

Teaching assistants

Graduate TAs:

Haodong Yao (hy2629@columbia.edu), office hours Thursdays 12-3PM

Baiqing Zhu (bz2393@columbia.edu), office hours Mondays 9AM-12PM

Andres Mark Sternberg (ams2643@columbia.edu), office hours Tuesdays 1-2PM and Wednesdays 6-8PM

Undergraduate TAs:

Celine Huyen-Dieu De Jager (cd3137@columbia.edu), office hours Mondays 2-4PM

Ronit Kathuria (rk3176@columbia.edu), office hours Thursdays 3-5PM

Jacob Asher Daum (jad2309@columbia.edu), office hours Mondays 3-4PM and 6-7PM

All TA office hours are held in the math help room.



The pdf syllabus contains a slightly more expanded version of the following.

Textbook

Calculus: Early Transcendentals, 9th Edition, by James Stewart.

It is not mandatory but strongly recommended to read the textbook, as the course will closely follow it. On the other hand, I will post the lecture notes I wrote.

It is indeed very helpful to read the textbook for a better understanding of the material. On the other hand, the same content can be found in an older edition of the textbook. If you choose to use an older version of the textbook, be mindful that the section/exercise numbers are often different.

Prerequisites

Calculus I or equivalent (Consult here for more information).

Course overview

This course is about multivariable calculus, namely calculus with many variables/values. The course will cover the following topics.

- Vectors and the geometry of space (Section 10.5 and Chapter 12)

- Vector functions (Chapter 13)

- Functions of several variables and partial derivatives (Chapter 14)

If you are wondering if this is the right class for you, there are alternatives to this course, like MATH UN1205 (Accelerated Multivariable Calculus; covers Chapters 12-16 of Stewart), MATH UN1207 (Honors Math A; proof-based), and APMA 2000 (Multivariable Calculus; for SEAS students).

Grading

There will be weekly homework, two midterms, and the final exam. The default weights are as follows.

- Homework, 25%

- Midterm 1, 20%

- Midterm 2, 25%

- Final, 30%

Also, there will be several opportunities to obtain supplementary bonus grades, up to 10% of the total grade.

- Weekly feedback surveys, 3%

- Extra assignment, 7%

Although attendance is not part of the grade, per University policy, students are expected to attend all classes.

We also offer you to configure your own alternative grading scheme for the major grading components. Your final grade will be the highest of the two (one using the default grading scheme, one using your own alternative grading scheme). Your grading scheme should satisfy the following conditions.

- The sum of the following four weights must be 100%, and the weights should be in the following range.

- Homework, 10-30%

- Midterm 1, 10-25%

- Midterm 2, 15-30%

- Final, 20-45%

Please email me your alternative grading scheme by Wednesday, September 27.

Homework

Homework will be out every Wednesday, except exam weeks, and due the following Wednesday by 11:59 PM.

There will be 11 homework assignments. Each homework assignment is worth 1/9 of the total homework grade, so you can miss up to two problem sets and still obtain a full grade on homework.

Please submit your homework on Gradescope, as a pdf file if possible, either typed or handwritten clearly and legibly. You are encouraged to collaborate on homework, but you must write up your own solutions in your words. Please cite any references used.

Except in extraordinary circumstances, late homework will not be accepted, to avoid placing an undue burden on graders.

Tests

There will be two in-class midterms (75 minutes) and a final exam (170 minutes).

Midterm 1: Oct 4 (Wed), in-class

Midterm 2: Nov 8 (Wed), in-class

Projected Final Exam Date (To be confirmed in November)

Section 002 (MW 8:40-9:55AM): Dec 15 (Fri), 9AM-Noon

Section 003 (MW 10:10-11:25AM): Dec 20 (Wed), 9AM-Noon

If you think you cannot make one of the two in-class midterms, make-up exams may be arranged within 2 days of the originally scheduled dates. Please let me know as soon as possible.

Unlike midterms, the Final exam cannot be moved at the instructor's discretion. If you have foreseeable difficulty in accommodating the current schedule of the Finals, please consult your advisor.

You may bring your own formula sheet during the exams, no longer than two sides of a single A4 paper. For the final, you can bring up to three sheets of A4 paper (max 6 sides in total). No electronic device (e.g. calculators) can be used during the exam.

Supplementary activities

Weekly feedback surveys

There will be a short survey posted every week regarding the past week's course content. I will ask questions like "was X confusing for you?" etc. You can get up to 3% of the total grade as a bonus (namely, not affecting the main four grading components) if you participate in the surveys. More precisely, you will get the full bonus grade of 3% if you participate in 6 or more surveys.

Extra assignment - Really, how is calculus used?

You can choose to work on this extra assignment about how to use calculus (in mathematics, science, engineering, economics, etc.).

After Midterm 2, I will post a list of problems you can choose for the extra assignment. The problems will be quite different from the regular homework assignments. For example, many problems will have several sub-problems to build up for a conclusion. Some problems may even ask you to write a short essay!

Students, if they wish, will then choose one problem of their interest to work on. This extra assignment will be due 12/11 (Mon). The extra assignment can make up to 7% of the total grade as a bonus (namely, not affecting the main four grading components).

Feel free to suggest the topics of your interest! As a mathematician, I certainly do not know all the applications of calculus in other disciplines. Please email me if you are interested. We can talk about what might be of interest to you over the semester.





Please note that the schedule is subject to change, especially during the first few weeks of the semester.

Date Topic Textbook Note
- Review of prerequisites | Exercise solutions, 1-7, 8-14, 15-20 Calculus I, Precalculus
9/6 (Wed) Overview, coordinate systems | Exercises 12.1, 10.3, 15.7, 15.8
9/11 (Mon) Vectors | Exercises 12.2
9/13 (Wed) Dot product + Trigonometry review | Exercises | Dot product and cosine 12.3 HW 1 due
9/18 (Mon) Cross product | Exercises | Cross product and sine | Parallelepiped 12.4
9/20 (Wed) Lines and curves | Exercises 10.1, 12.5 HW 2 due
9/25 (Mon) Planes and surfaces | Exercises | Distance between a point and a plane 12.5
9/27 (Wed) Planes and surfaces, continued | Exercises 12.5 HW 3 due
10/2 (Mon) Review -
10/4 (Wed) In-class Midterm 1 (No class) -
10/9 (Mon) Derivatives and integrals of vector functions | Exercises 13.2
10/11 (Wed) Calculus for curves and motions | Exercises 10.2, 13.3, 13.4 HW 4 due
10/16 (Mon) Functions of several variables | Exercises 14.1
10/18 (Wed) Limits and continuity in several variables | Exercises 14.2 HW 5 due
10/23 (Mon) Partial derivatives | Exercises 14.3
10/25 (Wed) Tangent planes and approximations | Exercises 14.4 HW 6 due
10/30 (Mon) Chain rule | Exercises 14.5
11/1 (Wed) Review - HW 7 due
11/6 (Mon) Academic Holiday (No class) -
11/8 (Wed) In-class Midterm 2 (No class) -
11/13 (Mon) Directional derivatives and the gradient | Exercises 14.6
11/15 (Wed) Local maxima and minima, critical points | Exercises 14.7 HW 8 due
11/20 (Mon) Global maxima and minima | Exercises 14.7
11/22 (Wed) Thanksgiving (No class) -
11/27 (Mon) Lagrange multipliers | Exercises 14.8
11/29 (Wed) Lagrange multipliers II: Multiple equality constraints | Exercises 14.8 HW 9 due
12/4 (Mon) Global maxima and minima II | Exercises 14.7, 14.8 HW 10 due
12/6 (Wed) Global maxima and minima III | Exercises -
12/11 (Mon) Review - Extra credit project (optional), HW 11 due