ttmarkstt
ttmarkstt ttmarkstt
  • 04-03-2018
  • Mathematics
contestada

Let u = <-6, 1>, v = <-5, 2>. Find -4u + 2v.

A) <34, -8>
B) <14, 0>
C) <14, 3>
D) <44, -12>

Respuesta :

jimthompson5910 jimthompson5910
  • 04-03-2018
u = <-6,1>
-4u = -4*<-6,1>
-4u = <-4*(-6),-4*1>
-4u = <24,-4>
----------------------
v = <-5,2>
2v = 2*<-5,2>
2v = <2*(-5),2*2>
2v = <-10,4>
----------------------
-4u + 2v = <24,-4> + <-10,4>
-4u + 2v = <24+(-10),-4+4>
-4u + 2v = <24-10,-4+4>
-4u + 2v = <14,0>
----------------------
Answer: B) <14,0>

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