MATH 251 Midterm: MATH 304 TAMU Midterm1Spring2018 Answers
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Uin: you have 75 minutes to work on this exam, no calculators, cell phones, other electronic devices, books, or notes are allowed during this exam, please show your work and justify your answers. Please tell me if your exam is missing a page. An aggie does not lie, cheat, or steal, or tolerate those who do. Construct the augmented matrix (cid:18) 2 2 2. 1 1 0 1 0 (cid:19), then carry out the following row operations: 4 4: r1*(1/2, r2 r2 r1, r2*(-1, r1 r1 r2. This will result in the matrix (cid:18) 1 1 0 1 0. The matrix to the left of the bar is the rref of a. The solution x can be easily computed: take x2 = and x4 = , then x = Math 304 (section 511: (20 points) let a = . Construct the matrix (a | i) = . Then apply row operations to change a into.
