Given x = (-1, -2,-2), u = (0,1,4), v = (-1,1,2), and w = (3,1,2) in R', find a, b, and c such that x = au+bv+cw.

Elementary Geometry For College Students, 7e
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ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter5: Similar Triangles
Section5.6: Segments Divided Proportionally
Problem 8E: Given: l1l2l3,AB=5,BC=x,DE=x2,EF=7 Find: x,BC,DE
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Given x = (-1, -2,-2), u = (0,1,4), v = (-1,1,2), and
w=(3,1,2) in R', find a, b, and c such that x = au+bv+cw.
Sol:
-b + 3c = -1
a + b +
C = -2
4a +
2b + 2c =
-2
⇒a=1, b = -2, c = -1
Thus x=u-2v-w
Transcribed Image Text:Given x = (-1, -2,-2), u = (0,1,4), v = (-1,1,2), and w=(3,1,2) in R', find a, b, and c such that x = au+bv+cw. Sol: -b + 3c = -1 a + b + C = -2 4a + 2b + 2c = -2 ⇒a=1, b = -2, c = -1 Thus x=u-2v-w
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