MAT 1302 Midterm: sfm11-2
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MAT 1302 Full Course Notes
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Instructions: (a) you have 80 minutes to complete this exam. (b) the number of points available for each question is indicated in square brackets. (c) all work to be considered for grading should be written in the space provided. The reverse side of pages is for scrap work. If you nd that you need extra space in order to answer a particular question, you should continue on the reverse side of the page and indicate this clearly. Please do not write in the table below. Mat 1302c second midterm exam: (a) (3 points) use cofactor expansion across a row to compute the determinant of the following matrix. (you can choose any row that you want. ) It would be most convenient to expand across the second row: expansion across the rst row: (cid:12)(cid:12)(cid:12)(cid:12)(cid:12)(cid:12) expansion along the rst row: (cid:12)(cid:12)(cid:12)(cid:12)(cid:12)(cid:12) Therefore det a = 44 28 = 72. And b = : (a) (3 points) let a = .
