MATH 251 Final: MATH 304 TAMU 304FinalSolutions
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Uin: you have 120 minutes to work on this exam, no calculators, cell phones, other electronic devices, or books are allowed during this exam. You may use three 8. 5 11 pages of written notes: please show your work and justify your answers. You may not receive full credit for a correct answer if insu cient work is shown or insu cient justi cation is given: please clearly indicate your answers, this exam has 11 pages. The last page is to be used as scrap paper. Please tell me if your exam is missing a page. An aggie does not lie, cheat, or steal, or tolerate those who do. Math 304 (section 503: (20 points) let a = . Find the reduced row echelon form of the matrix a, and nd all solutions (if any) of the system ax = b. By an explicit computation with row operations, we arrive at . And the solution vector x = .
