First and second order differential equations, separation of variables, linear differential equations, systems of first order equations, nonlinear differential equations and stability.

Prerequisites: Math 4A or Math 4AI with a minimum grade of C.

4

Units

Optional

Grading

1

Passtime

Undergraduate students only

Level Limit

Letters and science

College
Unlocks CH E 120A CH E 132B CH E 110B CH E 132A CHEM 115A CMPSC 111
These majors only math cneng cmpsc ece me crstu phys stats cneng
YANG XU
XU Yang
2.7
39 reviews
AI predicted, based on past grading trends of the course and instructor, class info, and 127 other factors
SH 1609
M
17:00 PM - 17:50 PM
25 / 25 Full

SH 1609
M
18:00 PM - 18:50 PM
25 / 25 Full

HSSB 2251
M
19:00 PM - 19:50 PM
25 / 25 Full

GIRV 2115
M
08:00 AM - 08:50 AM
25 / 25 Full

GIRV 2120
M
08:00 AM - 08:50 AM
25 / 25 Full

HSSB 2251
M
17:00 PM - 17:50 PM
25 / 25 Full

HSSB 2251
M
18:00 PM - 18:50 PM
25 / 25 Full

LSB 1101
M
19:00 PM - 19:50 PM
25 / 25 Full

GIRV 2119
W
18:00 PM - 18:50 PM
25 / 25 Full

SH 1609
W
19:00 PM - 19:50 PM
25 / 25 Full

GIRV 2123
W
17:00 PM - 17:50 PM
25 / 25 Full

ILP 3103
W
08:00 AM - 08:50 AM
25 / 25 Full

ILP 4101
W
16:00 PM - 16:50 PM
27 / 27 Full

GIRV 2123
W
12:00 PM - 12:50 PM
27 / 27 Full

See All
Winter 2024 . Zhang Q
LSB 1001
M W F
10:00 AM - 10:50 AM
Winter 2024 . Wei G
CHEM 1179
T R
14:00 PM - 15:15 PM
See All
MATH 4B Yang Xu Winter 2026 Total: 345
MATH 4B Yang Xu Fall 2021 Total: 92
See All
39
2.7
MATH4B . Yang Xu 18 Days Ago

Makes almost no sense during lecture - I taught myself a majority of the material. TA's are super helpful, as they teach you patterns to recognize for exams. The exams themselves are worth 30 and 50% of your grade, so each question is either worth 1 or 2.5 percent of your overall grade. Though, the exams were pretty easy compared to the homework.

0 helpful 0 unhelpful
MATH4B . Yang Xu A Month Ago

Two midterms, the lowest one is dropped. Weekly homework, the lowest one is dropped. All the exams weren't too difficult, but his handwriting during the lecture was not great.

0 helpful 0 unhelpful
MATH4B . Yang Xu A Month Ago

Very easy all mcq midterms and final. lowest midterm dropped. hw due weekly online. TA resources were extremely helpful and I never went to lectures. Not the best teacher with confusing lectures so I didn't bother going.

0 helpful 0 unhelpful
MATH4B . Yang Xu A Month Ago

Pretty bad lecturer and the slides he has posted are from previous years and don't always match up with what he covered in class. There are two midterms, lowest is dropped. Lowest homework is dropped. Midterms and the final were really easy though. Easy class but poor prof IMO.

0 helpful 0 unhelpful
MATH4B . Yang Xu A Month Ago

His lectures were pretty scattered and not super worth going to. He also writes out a bunch of problems and concepts but his handwriting is almost completely illegible. I had to teach myself almost all of it but the TAs had very useful resources.

0 helpful 0 unhelpful
MATH4B . Yang Xu A Month Ago

He wasn't the worst that's for sure. In fact his lectures were good for the first half of the course. His lectures at the very end were kind of all over the place. His tests were pretty fair, but he constantly didn't follow the lecture slides and was unclear about certain expectations. It's a test heavy class, but doable.

0 helpful 0 unhelpful
See all 39 reviews
See All
MATH 4B
149 / 150 Enrolled
Differential Equations
Chiang H
M W F
11:00 AM - 11:50 AM
MATH 4B
93 / 150 Enrolled
Differential Equations
XU Yang 2.7
T R
08:00 AM - 09:15 AM
MATH 3B
310 / 350 Enrolled
Calculus with Applications, Second Course
Karel Casteels 4.2
T R
11:00 AM - 12:15 PM
MATH 3A
273 / 278 Enrolled
Calculus with Applications, First Course
T B A
M W F
09:00 AM - 09:50 AM
MATH 3B
149 / 150 Enrolled
Calculus with Applications, Second Course
T B A
T R
12:30 PM - 13:45 PM
MATH 3A
160 / 225 Enrolled
Calculus with Applications, First Course
Zheng Liu 3.8
T R
15:30 PM - 16:45 PM
MATH 4A
427 / 500 Enrolled
Linear Algebra with Applications
Paul Atzberger 2.7
T R
08:00 AM - 09:15 AM
MATH 6B
53 / 150 Enrolled
Vector calculus with Applications, Second Course
Nguyen G
M W F
08:00 AM - 08:50 AM