MATH 33B · Lec 1
Differential Equations
Seats, time, final and grades
Seats
Open, 15 seats left.
195 of 210 enrolled, lecture and all discussions summed.
Meets
MWF 9:00am-9:50am
Lecture only. You also attend a discussion, listed below.
Final
Wed 9 Dec, 6:30pm to 9:30pm
One exam for the whole class, Los Angeles time.
Read 4 days ago.
Grades
4,509 letter grades, everyone who has taught MATH 33B.
Read 14 minutes ago. This is a recent reading, not a live seat count.
dibs has seen this section open 6 times since 17 August. The last time was 25 September.
Watching is the one thing here that needs an account, because an alert needs somewhere to go. Everything else on this page works signed out.
Put this class on a board
A board is one quarter you are drafting, so it needs an account to live in. Signing in brings you straight back to this page, with this class still in front of you.
Before you can enroll
Tell dibs what you have already taken and this line will say which of these you have. Your list.
The registrar says this two ways. Its requisites table calls the requisite above a warning, so enrollment is not blocked, and its course description for MATH 33B calls the same requisite enforced. dibs follows the table and cannot tell you which one the department will act on. Read the registrar's own page.
From the registrar limited early, then open
Information on the Mathematics Diagnostic Test and Advanced Placement (AP) credit is available at https://uclamathugrad.zendesk.com/ . Seats are held for entering students who enroll through New Student Orientation sessions beginning July 2, 2026. New student restrictions will be lifted on September 15, 2026 at 8 a.m. There will be two MANDATORY midterm examinations from 6 to 7:50 p.m. on the following Thursdays: October 22 and November 19, 2026.
The limit stands until 15 September, and lifts then. dibs still counts this class as one you can take, but not yet.
Restrictions read 4 days ago. dibs re-reads these slowly because they rarely change; watch the section and it moves to every 6 hours.
Discussions
You enroll in the discussion, not the lecture, so the seat figure above is the sum across all of them and can read open while every discussion you could actually join is full.
6 discussions, 5 open.
-
Dis 1A
T 9:00am-9:50am
Luo, O.
Waitlist, 0 of 3 places taken.
-
Dis 1B
R 9:00am-9:50am
Luo, O.
Open, 1 seat left.
-
Dis 1C
T 9:00am-9:50am
Goldman, B.
Open, 4 seats left.
-
Dis 1D
R 9:00am-9:50am
Goldman, B.
Open, 1 seat left.
-
Dis 1E
T 9:00am-9:50am
Balasubramani, R.
Open, 5 seats left.
-
Dis 1F
R 9:00am-9:50am
Balasubramani, R.
Open, 4 seats left.
| Section | Meets | Instructor | Seats |
|---|---|---|---|
| Dis 1A | T 9:00am-9:50am | Luo, O. | Waitlist, 0 of 3 places taken. |
| Dis 1B | R 9:00am-9:50am | Luo, O. | Open, 1 seat left. |
| Dis 1C | T 9:00am-9:50am | Goldman, B. | Open, 4 seats left. |
| Dis 1D | R 9:00am-9:50am | Goldman, B. | Open, 1 seat left. |
| Dis 1E | T 9:00am-9:50am | Balasubramani, R. | Open, 5 seats left. |
| Dis 1F | R 9:00am-9:50am | Balasubramani, R. | Open, 4 seats left. |
When it meets
Meets: MWF 9:00am-9:50am
Discussions: R 9:00am-9:50am · T 9:00am-9:50am
Bunche Hall 1209B
Grades
Of the 13 people in the grade record for MATH 33B, the 2 with the most grades: WANG, CHENGXI at 3.80 over 1,215 grades and MARSDEN, KATIE at 3.07 over 761 grades.
- A range
- 65%
- P/NP
- <1%
- D/F/W
- 5.7%
What students say
dibs measures outcomes: grades, seats, how fast it fills. For what the class is actually like to sit in, BruinWalk has the reviews.
dibs has not read this course’s reviews, so it cannot say what kind of work it sets. That is dibs not having looked. It is not a course without papers or exams, and the reviews linked below are the answer until dibs catches up.
Will it still be here
medium risk chance of closing before your enrollment pass.
Final enrollment per term from four years of grade data. Summer excluded: different population, different pass structure.
- 19721F
- 19822W
- 13022S
- 18722F
- 20123W
- 21023S
- 20523F
- 13424S
- 18824F
- 20625W
- 16825S
- 20125F
Peak 210 · most recent 25F at 201
Seats over time
Filled by 3 over about 2 months
6 times reopenedA dot is a reading where something moved: the seat count, the status, or the waitlist. Flat between dots joins recorded counts; changes between reads may be missed. The line starts when dibs first saw this section rather than reaching back before it existed. The last one is the last time dibs read this section, moved or not: 14 minutes ago.
Show the readings (80)
| Recorded | Enrolled | Capacity | Status | Waitlist | Hours read |
|---|---|---|---|---|---|
| 1 Oct 22:02 | 195 | 210 | open | 0 of 18 | 3 of 8 |
| 1 Oct 15:02 | 195 | 210 | open | 0 of 18 | 2 of 5 |
| 1 Oct 11:32 | 194 | 210 | open | 0 of 18 | 3 of 8 |
| 1 Oct 04:32 | 195 | 210 | open | 0 of 18 | 2 of 5 |
| 1 Oct 00:02 | 196 | 210 | open | 0 of 18 | 3 of 8 |
| 30 Sep 17:02 | 197 | 210 | open | 0 of 18 | 3 of 8 |
| 30 Sep 10:02 | 198 | 210 | open | 0 of 18 | 2 of 5 |
| 30 Sep 06:32 | 199 | 210 | open | 0 of 18 | 2 of 5 |
| 30 Sep 02:02 | 198 | 210 | open | 0 of 18 | 2 of 5 |
| 29 Sep 22:32 | 200 | 210 | open | 0 of 18 | 7 of 22 |
| 29 Sep 01:32 | 201 | 210 | open | 0 of 18 | 2 of 4 |
| 28 Sep 22:02 | 202 | 210 | open | 0 of 18 | 3 of 8 |
| 28 Sep 15:02 | 200 | 210 | open | 2 of 18 | 6 of 19 |
| 27 Sep 21:32 | 202 | 210 | open | 1 of 18 | 2 of 4 |
| 27 Sep 18:02 | 203 | 210 | open | 1 of 18 | 8 of 26 |
| 26 Sep 17:02 | 205 | 210 | open | 1 of 18 | 6 of 19 |
| 25 Sep 23:32 | 206 | 210 | open | 1 of 18 | 2 of 4 |
| 25 Sep 20:02 | 207 | 210 | open | 1 of 18 | 3 of 8 |
| 25 Sep 13:02 | 206 | 210 | open | 1 of 18 | 2 of 5 |
| 25 Sep 09:32 | 209 | 210 | open | 3 of 18 | 4 of 12 |
| 24 Sep 22:52 | 210 | 210 | waitlist | 2 of 18 | 2 of 4 |
| 24 Sep 19:22 | 209 | 210 | open | 1 of 18 | 2 of 5 |
| 24 Sep 15:52 | 208 | 210 | open | 1 of 18 | 4 of 11 |
| 24 Sep 05:22 | 208 | 210 | open | 0 of 18 | 5 of 16 |
| 23 Sep 14:42 | 207 | 210 | open | 0 of 18 | 2 of 4 |
| 23 Sep 11:12 | 207 | 210 | open | 1 of 18 | 6 of 19 |
| 22 Sep 17:52 | 209 | 210 | open | 1 of 18 | 6 of 19 |
| 21 Sep 23:22 | 210 | 210 | waitlist | 1 of 18 | 2 of 5 |
| 21 Sep 19:52 | 209 | 210 | open | 1 of 18 | 2 of 4 |
| 21 Sep 16:22 | 210 | 210 | waitlist | 1 of 18 | 2 of 5 |
| 21 Sep 12:52 | 209 | 210 | open | 1 of 18 | 2 of 4 |
| 21 Sep 09:22 | 210 | 210 | waitlist | 2 of 18 | 3 of 9 |
| 21 Sep 01:12 | 210 | 210 | waitlist | 1 of 18 | 8 of 26 |
| 20 Sep 00:52 | 210 | 210 | waitlist | 2 of 18 | 4 of 11 |
| 19 Sep 14:32 | 210 | 210 | waitlist | 1 of 18 | 11 of 35 |
| 18 Sep 04:32 | 209 | 210 | open | 1 of 18 | 4 of 12 |
| 17 Sep 17:02 | 208 | 210 | open | 0 of 18 | 4 of 12 |
| 17 Sep 06:32 | 210 | 210 | waitlist | 0 of 18 | 3 of 9 |
| 16 Sep 22:32 | 209 | 210 | open | 0 of 18 | 2 of 4 |
| 16 Sep 19:02 | 207 | 210 | open | 1 of 18 | 4 of 12 |
| 16 Sep 08:32 | 209 | 210 | open | 1 of 18 | 3 of 8 |
| 16 Sep 01:32 | 210 | 210 | waitlist | 1 of 18 | 2 of 6 |
| 15 Sep 20:52 | 209 | 210 | open | 2 of 18 | 2 of 5 |
| 15 Sep 16:12 | 202 | 210 | open | 0 of 18 | 2 of 5 |
| 15 Sep 12:42 | 196 | 210 | open | 0 of 18 | 4 of 12 |
| 15 Sep 01:12 | 197 | 210 | open | - | 2 of 5 |
| 14 Sep 21:42 | 198 | 210 | open | - | 7 of 19 |
| 14 Sep 03:22 | 197 | 210 | open | - | 18 of 58 |
| 11 Sep 18:40 | 198 | 210 | open | - | 19 of 157 |
| 5 Sep 06:40 | 197 | 210 | open | - | 10 of 53 |
| 3 Sep 02:40 | 196 | 210 | open | - | 3 of 4 |
| 2 Sep 23:40 | 195 | 210 | open | - | 2 of 4, 1 no hourly record |
| 2 Sep 20:40 | 196 | 207 | open | - | no hourly record |
| 2 Sep 17:40 | 196 | 210 | open | - | no hourly record |
| 2 Sep 16:40 | 195 | 210 | open | - | no hourly record |
| 2 Sep 10:40 | 196 | 207 | open | - | no hourly record |
| 2 Sep 09:40 | 196 | 210 | open | - | no hourly record |
| 1 Sep 02:40 | 196 | 207 | open | - | no hourly record |
| 31 Aug 23:40 | 195 | 204 | open | - | no hourly record |
| 31 Aug 22:40 | 195 | 207 | open | - | no hourly record |
| 31 Aug 21:40 | 195 | 204 | open | - | no hourly record |
| 31 Aug 19:40 | 195 | 207 | open | - | no hourly record |
| 31 Aug 17:40 | 195 | 204 | open | - | no hourly record |
| 31 Aug 15:40 | 195 | 207 | open | - | no hourly record |
| 31 Aug 13:40 | 195 | 204 | open | - | no hourly record |
| 31 Aug 12:40 | 195 | 207 | open | - | no hourly record |
| 31 Aug 02:40 | 195 | 204 | open | - | no hourly record |
| 30 Aug 22:40 | 196 | 204 | open | - | no hourly record |
| 30 Aug 21:40 | 195 | 204 | open | - | no hourly record |
| 27 Aug 09:40 | 196 | 204 | open | - | no hourly record |
| 26 Aug 00:40 | 196 | 201 | open | - | no hourly record |
| 25 Aug 23:40 | 194 | 201 | open | - | no hourly record |
| 25 Aug 22:40 | 196 | 201 | open | - | no hourly record |
| 21 Aug 13:40 | 194 | 201 | open | - | no hourly record |
| 21 Aug 06:40 | 194 | 198 | open | - | no hourly record |
| 20 Aug 23:40 | 193 | 198 | open | - | no hourly record |
| 20 Aug 17:40 | 191 | 198 | open | - | no hourly record |
| 19 Aug 21:40 | 190 | 198 | open | - | no hourly record |
| 18 Aug 19:40 | 191 | 198 | open | - | no hourly record |
| 17 Aug 15:07 | 192 | 198 | open | - | - |
How readings and alerts work
A reading and an hourly record are different things, and most charts here hold more of the second missing than present. dibs has taken readings of a section since long before it began keeping an hour-by-hour log of when it looked, so the empty stretches are dibs saying it was not keeping that log yet, not that it looked and found nothing. That is the age of the record and not a fault.
Seat counts show the last successful read, not live availability. Refreshes can be delayed by request limits or upstream interruptions. Watched sections receive priority, but an hourly update for every section is not guaranteed.
The registrar can change a seat count between our checks. Alerts depend on dibs detecting an opening and completing delivery; a quiet watch does not prove that no seat opened. Check the registrar before enrolling.
Class chat
Nobody on dibs watches this class or has it on a plan yet. Nobody has posted yet.
Reading a room needs no account. Posting does, and it is free.