[Suman Ganguli]

We’ll have our first midterm this coming Monday (March 11).

I’ll fill in this matrix of review exercises over the next couple days, so keep an eye on this post:

Sec #: Examples / Practice Problems / Exercises:

1.1: 3 / 2-4 / 17, 19, 21, 27,
1.2: 1-5 / 1-2 / 3, 7-19 odd, 23-29 odd
1.3: 1-6 / 1-2 / 5, 9, 11-21 odd, 25
1.4: 1-5 / 1-2 / 5-21 odd, 25, 26,
1.5: 1-3 / 1-2 / 5-13 odd, 14, 17, 33, 35
1.7: 1-6 / 1-4 / 1-13 odd, 31

[Suman Ganguli]

That’s a lot of exercises, but you should have already attempted them all as part of the HW sets. Also we’ve gone through a fair number of these in class.

I suggest you tackle a couple sections per day–read thru the examples, try Practice Problems, and then work through the exercises.

I’ll try to write up solutions for a couple exercises in each section and post here over the weekend.

[Ms. Desir]

can you write the solution to questions 4 and 5 in section 1.1 .

[Suman Ganguli]

Do you mean the problems on p10, asking you to #4: find the point of interesection of the two given lines and #5: describe in words the next couple row operations? The solution for #5 is in the back of the book. For #4, just set up the augmented matrix for the system of two equations and solve.

I am attaching solutions for #19 in Sec 1.1 and #19 in Sec 1.2

[Ms. Desir]

ok thank you

[Suman Ganguli]

For 1.1.4, you should be able to row reduce to the following row reduced echelon form:

[ 1 0 -3
0 1 -5 ]

which gives you the answer

[Suman Ganguli]

A few exercises from Sec 1.3

[Suman Ganguli]

A couple more solutions, for Sec 1.4 exercises