Math 21
Spring 2019

Home Course Schedule Homework Exams and Resources Office Hours

Logistics for handing in homework

The homework is due on Wednesdays at 9am. Homework submissions will be handled electronically via the Gradescope platform. Students registered for the course at the end of the first weekend should receive an email to sign up for Gradescope. Otherwise, please contact your instructor starting the morning of April 9th.

Gradescope accepts only electronic submissions, so you will need to scan your homework before uploading it. Make sure to allot plenty of time to follow the submission instructions here before each deadline.

Assignments will be posted no later than a week before they are due. Any change to a posted assignment will be announced in class and via email.

For the written assignments

Be sure to show your work (helps with partial credit and lets us comment on your process).

Remember: calculators are not allowed for the exams and homework is one way to help prepare yourself for the tests. Therefore, you should avoid using a calculator when completing your homework. However, there are some homework problems that we feel are important for building conceptual understanding and yet a calculator might be helpful. Such problems are indicated below with a superscript "T".

Practice problems

Along with each assignment, there is also a list of "Practice Problems." These are not to be turned in but are strongly encouraged. You cannot succeed in this class without doing the practice problems. Given the large number of practice problems, you might want to look at some each week while completing the homework and save others for refreshing the material throughout the quarter/exam studying.

Most of these practice problems are odd numbers, meaning you can check your work by looking at the answers in the back of your textbook. Practice problems that are even numbered are great to discuss with your peers and/or in office hours.

Solutions to the homework assignments will be posted here within a week after the due date.

Homework regrades

If there is a problem where you believe you deserve more credit based on the visible work in your original submission and the grader's rubric, let your instructor know ASAP. You do not need to include any screenshots in this email; just explain the issue. All requests for homework regrades must be submitted within two weeks of the original submission date or June 11th, whichever comes first.

Please note that if a problem was missing from your submission (whether you accidentally skipped it, did the incorrect problem, or forgot to upload the relevant scan), you will not receive any credit for that problem.

Problem Set # Due Date Written Assignment
(To be written up, scanned, and submitted)
Practice Problems
0 Wed, Apr 10 Optional assignment Optional assignment in order to have lowest homework grade dropped Consider brushing up on some precalculus
1 Wed, Apr 10 Problems for HW 1
Solutions
HW 1 self-quiz and solutions (wait, what's a "self-quiz"?)
7.6: 5, 9, 11, 13, 15, 21, 23, 27, 31, 33, 35, 37, 45, 47, 51, 60-69
7.7: 1, 3, 5, 7, 9
Math 19 review problems and solutions
Math 20 review problems and solutions
2 Wed, Apr 17 Problems for HW 2
Solutions
HW 2 self-quiz and solutions (wait, what's a "self-quiz"?)
Supplemental comparison notes
7.6: 17, 19, 25, 29, 33, 37, 39, 45, 47
7.7*: 11, 13, 15, 21, 23, 25, 27, 29
*Note: for problems 11-25, "decide" can involve a comparison or it could involve an attempt to compute the integral exactly (so showing a limit exists or not).
9.1: 7, 9, 11, 13
3 Wed, Apr 24 Problems for HW 3
Solutions
HW 3 self-quiz and solutions
9.2: 1, 3, 5, 7, 9, 13, 25, 27, 29, 31, 33, 49
9.3: odd numbers from 1-33, 37, 47, 51-58
Midterm 1 on Wednesday, April 24 at 7pm in Hewlett 200

Topics are those covered in the first three weeks of the course.

You can find more information on the Exams page.

4 Wed, May 1 Problems for HW 4
Solutions
HW 4 self-quiz and solutions
9.3: 35
9.4: 1, 3, 5, 7, 9, 11, 13, 53
5 Wed, May 8 Problems for HW 5
Solutions
HW 5 self-quiz and solutions
9.4: odd numbers 15-59, odd numbers 65-97, 119-127, 130, 132-135
6 Wed, May 15 Problems for HW 6
Solutions
HW 6 self-quiz and solutions
9.5: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 57-69

Convergence tests practice from 5/6/19 and solutions

Midterm 2 on Wednesday, May 15 at 7pm in Hewlett 200

The exam will focus mainly on those topics covered in Weeks 4 through 6 of the course, though topics from Weeks 1 through 3 may be needed.

You can find more information on the Exams page.

7 Wed, May 22 Problems for HW 7
Solutions
HW 7 self-quiz and solutions
9.5: 35, 37, 39
10.1: 1, 3, 5, 7, 9, 11, 13, 15, 27, 29, 62-66
8 Wed, May 29 Problems for HW 8
Solutions
HW 8 self-quiz and solutions
10.2: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 31, 43, 45, 47, 49, 51, 65-71
10.3: 1, 3, 5, 7, 9, 13, 15, 17, 33, 35, 64-68
9 Wed, June 5 Problems for HW 9
Solutions
HW 9 self-quiz and solutions
10.Review: 1, 3, 5, 7, 11, 13, 15, 17, 23, 25, 27, 29b, 33, 35, 37, 39
(Solutions are in the back of the book under Chapter 10 review on page 700)
See the Exams page for information about review problems.
Final exam on Friday, June 7 at 7pm in Cubberley Auditorium
(Cubberley Auditorium is in the School of Education.)

You can find more information on the Exams page.

Spring 2019 -- Department of Mathematics, Stanford University