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Finding a Basis and Dimension In Exercises
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Elementary Linear Algebra (MindTap Course List)
- Find an orthonormal basis for the solution space of the homogeneous system of linear equations. x+yz+w=02xy+z+2w=0arrow_forwardProof Let A be an mn matrix. a Prove that the system of linear equations Ax=b is consistent for all column vectors b if and only if the rank of A is m. b Prove that the homogeneous system of linear equations Ax=0 has only the trivial solution if and only if the columns of A are linearly independent.arrow_forward12 Chapter 1 Systems of Linear Equations In Exercises 37-56, solve the system of linear equations. 38. 3x + 2y = 2 6x + 4y = 14 X1 - X, = 0. 3x, - 2x, = -1 2x, 6x, + 2.x, 39. 2и + V = 120 40 X, - 0. u + 2v = 120 41. 9x - 3y 42. , + x2 = 0 %3D 3x + žy 4x, + x, = 0 y + 2 = 4 x, + 3 44. 4 1 43. 2 + 3 - 2y = 5 45. 0.02r, - 0.05x, 2x - x, = 12 -0.19 46. 0.05x, - 0.03x, = 0.21 0.03x + 0.04x2 x + y + z = 6 2x - y + z 3 0.52 0.07.r + 0.02x, = 0.17 47 48. x + y + z = 2 -x + 3y + 2z = 8 3x - z = 0 4x + y = 4 49. 3x, - 2x, + 4x; = 1 50. 5x1 3x, + 2x, = 3 %3D %3D | X1 X2 - 2x3 = 2х, + 4x, — X3 =7 X; - 11x, + 4x3 = 3 + 4x3 2x, -- 3x, + 6x3 = 8 51. 2x, + x2 - 3x, 4 52. X1 13 %3D 4x1 + 2x3 10 4x - 2x2 + x3 = -2x, + 3x2 - 13x, = -8 2x, - 2x, - 7x3 = - 19 54. x1 - 2x2 + 5x3 3x, + 2x, - x = -2 53. x - 3y + 2z = 18 2 %3D 5x - 15y + 10z = 18 55. x + y + z + w = 6 2x + 3y w = 0 - 3x + 4y +z + 2w 4 x + 2y – z + w 0 56. X1 2x2 - X3 3x2 2x, - x + 4x3 + 3x4 = 4 X4 = 0 - 2xg = 1 = 5arrow_forward
- Find a basis for and the dimension of the solution space of the homogeneous system of linear equations z = 0 —х + Зх — Зх — 5у — 62 3D 0 y + = 0 (a) a basis for the solution space (b) the dimension of the solution spacearrow_forwardLinear Algebra B= 1 0 -2 0 4 -2 4 -2 -2013 for the given matrix B above, find the following: a.) find its Rank b.) find its Nullity show complete solutions.arrow_forwardb5arrow_forward
- Use Matrix Inversion to solve the collection of systems of linear equations. You do not need to show how you calculate any inverses, but you do need to state what the inverses are and how you are using them. a.) −x + 2y + 3z = 1 , x + y + z = 2 , 2x + y + 3z = 3 b.) −x + 2y + 3z = 0 , x + y + z = 0 , 2x + y + 3z = 7 c.) −x + 2y + 3z = 2 , x + y + z = 1 , 2x + y + 3z = 1arrow_forwardFind a basis for the solution space of the following homogeneous system of linear equations. 3x1 + 9x2 + 30x3 + 21x4 = 0 x1 - 3x2 - 8x3 + 5x4 = 0 2x₁ + 12x2 + 38x3 + 16x4 = 0 ○ {(1, 0, 1, 6), (0, 3, 9, 0), (1, 0, 0, 1)} O {(0, 0, 1, 6), (1, 3, 9, 1)} {(1, 0, 0, 0), (0, 3, 0, 0), (0, 0, 10, 7)} O {(-1, -3, 1, 0), (-18, -1, 0,3)} O {(1, 0, 0, 0), (0, 3, 0, 0), (0, 0, 10, 0), (0, 0, 0, 7)}arrow_forward(Road Network) The flow of traffic (in vehicles/hour) through a network of streets is shown below. 650 700 450 600 800 700 700 600 Traffic flow through a network of streets. (a) Set up and solve a system of linear equations to find z,, where i = 1,2, ...,6. (b) Assuming that each road can handle a maximum of 1000 vehicles/hour, suggest patterns that will ensure congestion-free traffic flow. (c) Suppose r6 = 0 (for repairs), find another feasible traffic flow pattern.arrow_forward
- Determine if the system has a solution. If so, write the solution in parametric vector form. How does this compare to the solution(s) to the homogeneous linear system with the same coefficients on each variable? -x1 + X2 2x1 + 3x2 x1 + X2 - 5x3 5x3 x3 = = -1 12 5arrow_forwardFind an orthonormal basis for the solution space of the homogeneous system of linear equations. X1 + x2 2x, + x2 – 2x3 – 2x4 = 0 X3 X4 = 0 | |arrow_forwardExercise 2 Find the solution set of the system of linear equations represented by the augmented matrix -1 3 1) 1 -2 1 1 2, 1 1 2) 1 -2 1 -2 0 1arrow_forward
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