Skip to content
dibs
Menu
Fall 2026 Change term ▾
Spring 2027 Winter 2027 Fall 2026 Summer Session C 2026 Summer Session A 2026 Spring 2026 Winter 2026 Fall 2025
Sign in

MATH 31B · Lec 2

Integration and Infinite Series

Fall 2026Gu, H.4 units

Seats, time, final and grades

Seats

Waitlist, 0 of 6 places taken.

140 of 140 enrolled, lecture and all discussions summed.

Meets

MWF 8:00am-8:50am

Lecture only. You also attend a discussion, listed below.

Final

Tue 8 Dec, 6:30pm to 9:30pm

One exam for the whole class, Los Angeles time.

Read 4 days ago.

Grades

2.92
predicted, this instructor · 203 grades

203 letter grades, Gu, H..

Read 1 minute 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 1 October.

Join the waitlist on the registrar (opens in a new tab) Sign in to watch for an opening

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.

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. Enrollment is contingent on taking and passing the Mathematics Diagnostic Test. There will be two MANDATORY midterm examinations from 6 to 7:50 p.m. on Monday, October 19 and Friday, November 20, 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, 1 open: Dis 2D, R 1:00pm-1:50pm. Lecture reads closed, so its 1 open discussion cannot be reached from here. The way in is the lecture's waitlist, at 0 of 6.

These seats are real, and you cannot reach them from here. The lecture reads waitlist, and you enroll in the discussion but attend both, so the 1 open discussion below is out of reach while that holds. The way in is the lecture's waitlist, at 0 of 6.
  • Dis 2A

    T 1:00pm-1:50pm

    Rai, K.

    Closed.

  • Dis 2B

    R 1:00pm-1:50pm

    Rai, K.

    Waitlist, 0 of 3 places taken.

  • Dis 2C

    T 1:00pm-1:50pm

    Faktor, B.

    Closed.

  • Dis 2D

    R 1:00pm-1:50pm

    Faktor, B.

    Open, 6 seats left.

  • Dis 2E

    T 1:00pm-1:50pm

    An unnamed TA

    Closed by the department.

  • Dis 2F

    R 1:00pm-1:50pm

    An unnamed TA

    Closed by the department.

When it meets

Mon
Tue
Wed
Thu
Fri
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm

Meets: MWF 8:00am-8:50am

Discussions: R 1:00pm-1:50pm

Moore Hall 100

Grades

2.92
predicted, this instructor · 203 grades

Of the 19 other people in the grade record for MATH 31B, the 2 with the most grades: SANCHEZ OCAL, PABLO at 3.10 over 751 grades and XIONG, HAOREN at 2.91 over 674 grades.

A range
43%
P/NP
0%
D/F/W
14.3%

Full grade history for MATH 31B

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.

What the work looks like

  • 2 exams, said by 7 reviewers
  • 3 quizzes, said by 3 reviewers
  • Problem sets mentioned, no number given, said by 6 reviewers

Read from 818 reviews 26 days ago. dibs counts only what a review actually states, so a kind of work nobody mentioned is absent rather than zero.

Reviews for MATH 31B Search the reviews for H. Gu

Will it still be here

high 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.

  • 18221F
  • 21722W
  • 19722S
  • 20222F
  • 18023W
  • 28123S
  • 21023F
  • 20224W
  • 21724F
  • 19325W
  • 14425S
  • 20825F
Enrollment by term: 21F 182, 22W 217, 22S 197, 22F 202, 23W 180, 23S 281, 23F 210, 24W 202, 24F 217, 25W 193, 25S 144, 25F 208

Peak 281 · most recent 25F at 208

Seats over time

Filled by 86 over about 2 months

6 times reopened
140 of 140 · no seats left in its discussions
17 Aug 15:079 Sep 09:482 Oct 04:30
dibs read 168 of the 173 hours its hourly record covers, 97%, and did not look in 5. dibs had no hourly record before 25 Sep, which is the other 921 of 1094 plotted.140 of 140 enrolled at the newest reading, 1 minute ago, and no seats left in its discussions. Seats from 17 Aug 15:07 to 2 Oct 04:30, 54 to 140. dibs read 168 of the 173 hours its hourly record here covers, 97%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 5 hours dibs was keeping a record and did not reach this section. Nothing before 25 September at 00:00, where this section's record starts, has a read either way, which is 921 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.

A 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: 1 minute ago.

Show the readings (48)
Recorded Enrolled Capacity Status Waitlist Hours read
2 Oct 04:30 140 140 waitlist 0 of 6 17 of 17
1 Oct 12:30 140 140 waitlist 0 of 6 2 of 2
1 Oct 11:32 139 140 open 0 of 6 78 of 83
28 Sep 01:02 140 140 waitlist 0 of 6 4 of 4
27 Sep 22:20 139 140 open 0 of 6 2 of 2
27 Sep 21:32 140 140 waitlist 0 of 6 21 of 21
27 Sep 01:00 139 140 open 0 of 6 5 of 5
26 Sep 21:20 140 140 waitlist 0 of 6 2 of 2
26 Sep 20:32 139 140 open 0 of 6 28 of 28
25 Sep 17:30 140 140 waitlist 0 of 6 2 of 2
25 Sep 16:32 139 140 open 0 of 6 3 of 3
25 Sep 14:00 140 140 waitlist 0 of 6 2 of 2
25 Sep 13:02 139 140 open 0 of 6 14 of 164, 150 no hourly record
18 Sep 18:32 140 140 waitlist 0 of 6 no hourly record
18 Sep 04:32 147 210 open 0 of 18 no hourly record
16 Sep 22:32 148 210 open 0 of 18 no hourly record
16 Sep 19:02 147 210 open 0 of 18 no hourly record
16 Sep 01:32 148 210 open 0 of 18 no hourly record
15 Sep 20:52 149 210 open 0 of 18 no hourly record
15 Sep 16:12 146 210 open 0 of 18 no hourly record
15 Sep 12:42 149 210 open 0 of 18 no hourly record
13 Sep 03:52 151 210 open - no hourly record
12 Sep 01:22 150 210 open - no hourly record
11 Sep 23:02 148 210 open - no hourly record
11 Sep 18:40 146 210 open - no hourly record
10 Sep 20:40 105 210 open - no hourly record
9 Sep 22:40 105 198 open - no hourly record
8 Sep 18:40 77 198 open - no hourly record
5 Sep 06:40 77 186 open - no hourly record
3 Sep 18:40 67 186 open - no hourly record
1 Sep 02:40 67 176 open - no hourly record
31 Aug 23:40 66 176 open - no hourly record
31 Aug 22:40 67 176 open - no hourly record
31 Aug 21:40 66 176 open - no hourly record
31 Aug 19:40 67 176 open - no hourly record
31 Aug 17:40 66 176 open - no hourly record
31 Aug 15:40 67 176 open - no hourly record
31 Aug 13:40 66 176 open - no hourly record
31 Aug 12:40 67 176 open - no hourly record
26 Aug 00:40 66 176 open - no hourly record
25 Aug 23:40 61 176 open - no hourly record
25 Aug 22:40 66 176 open - no hourly record
24 Aug 15:41 61 176 open - no hourly record
21 Aug 00:40 62 165 open - no hourly record
20 Aug 17:40 63 165 open - no hourly record
19 Aug 21:40 56 165 open - no hourly record
18 Aug 19:40 55 154 open - no hourly record
17 Aug 15:07 54 154 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.

Sign in to start the conversation

Reading a room needs no account. Posting does, and it is free.