MATH 3A Midterm: Midterm1_3A
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MATH 3A Full Course Notes
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There are 6 exercises, worth a total of 40 points. Provide computations and or explanations, unless stated otherwise. Exercise 2 (10 = 2 + 4 + 2 + 2 pts) Solution: (a) [3, 3, 0]t . (b) . 2 (c) [0, 1, 0, 0]t + x3[1, 1, 1, 0] + x4[ 1, 1/2, 0, 1]t . (d) for example, column 1 - column 2 + column 3 = 0. Exercise 3 (7 = 2 + 3 + 2 pts) Solution: (a) [8, 6, 8, 0]t . (b) no, zero row in echelon form, [0, 0, 0, 1]t . (c) no, free variables. Let t : r3 r2 be the linear map such that. Let t : r2 r2 be the re ection in the line x = y, which is a linear map. Com- pute the standard matrix of t .