x+y +2 =0 y+2z -4 x - -10 [10 -1 4] 01 2 4+ 01 2 4 01 2 4 01 2 4-0 1 2 0 0 0 0 14 10 -1 -4] 10 -1 0 10 -1 10 0 -1 -2 10 Lo 0 0 1 0 0 0 1 Therefore, we have an inconsistent system (no solution). 20 io à 3. Show that the following system has infinitely many solutions. * + y + 100 5x + 10y + 20z = 2000 -5x + 10z = 1000 [111 100 [111 100] [111 100 5 10 20 2000 -0 5 15 1500 -0 1 3 300 -0 1 3 05 15 1500 10 -2 -200 300 -5 0 10 1000 OS 15 1500 0 0 0 0 2z-200 Solutions: 300-32
x+y +2 =0 y+2z -4 x - -10 [10 -1 4] 01 2 4+ 01 2 4 01 2 4 01 2 4-0 1 2 0 0 0 0 14 10 -1 -4] 10 -1 0 10 -1 10 0 -1 -2 10 Lo 0 0 1 0 0 0 1 Therefore, we have an inconsistent system (no solution). 20 io à 3. Show that the following system has infinitely many solutions. * + y + 100 5x + 10y + 20z = 2000 -5x + 10z = 1000 [111 100 [111 100] [111 100 5 10 20 2000 -0 5 15 1500 -0 1 3 300 -0 1 3 05 15 1500 10 -2 -200 300 -5 0 10 1000 OS 15 1500 0 0 0 0 2z-200 Solutions: 300-32
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter6: Vector Spaces
Section6.5: The Kernel And Range Of A Linear Transformation
Problem 10EQ
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