Instructor: Yuecheng Zhu yuecheng@upenn.edu
Office: DRL 4C7
Office Hours: Tue 9:30  10:30 AM, Thu 1  2 PM.
TA: Stephen Gillen stepe@math.upenn.edu

Course Guide
 Class meeting: TR 10:30 AM  12 PM, DRL A2.
 Textbook: Introduction to Linear Algebra (5E) by Gilbert Strang.
 Grades: 30% midterm, 40% final, 10% attendence, 10% weekly homework, 10% problems 10% attendence.
 Syllabus
 UPenn 3year Calendar

Problems (10%):
 Problem_sheet

Each problem is 10 pts.
You only need to get 100 pts. Note that the earlier problems are usually easier.

1, 2, 13, 16, 17 due on 3/15 ;

3, 4, 5, 14, 15 due on 4/11 ;

6, 7, 8, 9, 10, 11, 12 due on 4/25 ;

Homework (10%):
 The deadline is 4:30 pm of the due date.
You put your homework in Stephen's mailbox directly. His mailbox is located inside the Math Main Office.
The Math Main Office is closed at 5pm.

You have all together five oneday submission extensions.
For example, you may submit Homework 2 three days after the due date and Homework 3 two days after the duedate.
After that no late homework will be accepted.
Use them smartly. In particular, use them if you have big projects due.
If you use the submission extension, you should let TA know about it explicily.
If there are some very rare cases that you truly need more extensions email me before the deadline.
Starting from Homework 3, two of the homework problems will be graded. 50% for the correctness of the two problems, 50% for the completeness.
 Homework 1 (due on 1/25)
1.1: 16;
1.2: 13;
1.3: 7;
2.1: 3;
2.2: 12;
2.3: 1, 13, 25;
2.4: 26, 32;
2.5: 3, 7, 27;
2.6: 1, 5.
 Homework 2 (due on 2/1)
3.1: 23;
3.2: 13, 32;
3.3: 1, 4, 25;
3.4: 2, 11, 16, 20, 26, 32.
 Homework 3 (due on 2/15)
3.5: 2, 5, 24;
4.1: 4, 13, 16, 26;
4.2: 1, 3, 19, 20;
4.3: 1, 4, 12, 21.
 Homework 4 (due on 2/19)
4.4: 1, 3, 18, 21.
 Homework 5 (due on 3/1)
5.1: 1, 8, 11, 18, 29 (Also answer what det P should be), 30;
5.2: 5, 13, 15;
5.3: 18, 23.
 Homework 6 (due on)
6.1:;
6.2:.
6.4:;
6.5:;
 Homework 7 (due on)
7.1:;
7.2:;
7.3:.
 Homework 8 (due on)
8.1: ;
8.2: .

Exams (10%):

Schedule:
Date

Topic

Remark

Notes

1/11

1.1  1.2


Linear Combinations, the Dot Product

1/15


Martin Luther King, Jr. Day


1/16

1.3  2.1


Matrix times a Column Vector

1/18

2.2  2.4


From Row Operations to Matrix Multiplications

1/23

2.5  2.7


Inverse Matrices, LU Decomposition, Symmetric Matrices

1/25

3.1  3.2

Homework 1 due

Vector Spaces and Subspaces, Rank

1/29


Course Selection Period ends


1/30

3.3  3.4


Independence, Dimension and Basis

2/1

3.5  4.1

Homework 2 due

Four subspaces, Orthogonal Projections

2/6

Recitation



2/8

School closed



2/13

4.2  4.3


Orthogonal Projection and Linear Regression

2/15

4.3  4.4

Homework 3 due

Linear Regression, GramSchmidt

2/16


Drop Period ends


2/19


Homework 4 due


2/20

5.1  5.2


Determinants

2/22

Midterm Exam



2/27

5.2  5.3



3/1

6.1  6.2

Homework 5 due


3/3  3/11


Spring Break


3/13

6.4  6.5



3/15

7.1  7.2

Problem 1, 2, 13, 16, 17 due


3/20

7.3  7.4



3/22

8.1  8.2



3/27

8.2  8.3



3/29

9.1  9.2



3/30


Last day to withdraw


4/3

9.3



4/5

10.1



4/10

10.2



4/11


Problem 3, 4, 5, 14, 15 due


4/12

10.3



4/17

10.7



4/19

Review



4/24

Final Exam



4/25


Problem 6, 7, 8, 9, 10, 11, 12 due


