MAT 2580 Intro to Linear Algebra – Spring 2013 – Ganguli

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  • #13179

    Suman Ganguli
    Participant

    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

    #16610

    Suman Ganguli
    Participant

    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.

    #16628

    Ms. Desir
    Participant

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

    #16630

    Suman Ganguli
    Participant

    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

    #16631

    Ms. Desir
    Participant

    ok thank you

    #16632

    Suman Ganguli
    Participant

    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

    #16633

    Suman Ganguli
    Participant

    A few exercises from Sec 1.3

    #16636

    Suman Ganguli
    Participant

    A couple more solutions, for Sec 1.4 exercises

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