lillielupfer6144 lillielupfer6144
  • 14-01-2020
  • Mathematics
contestada

Find a+b,2a+3b,IaI, and Ia-bI. a[2, -4, 4], b=[0, 2, -1]

Respuesta :

erturkmemmedli
erturkmemmedli erturkmemmedli
  • 15-01-2020

Answer:

a+b = [2, -2, 2]

a+3b = [2,2,1]

|a| = 6

[tex]|a-b|=\sqrt{65}[/tex]

Step-by-step explanation:

[tex]a+b = [2+0,-4+2,4-1]=[2,-2,2][/tex]

[tex]a+3b = [2+0,-4+6,4-3]=[2,2,1][/tex]

[tex]|a|=]sqrt{4+16+16}=\sqrt{36}=6[/tex]

[tex]|a-b|=|\sqrt{(2-0)^2+(-4-2)^2+(4+1)^2}|=\sqrt{4+36+25}=\sqrt{65}[/tex]

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