Let vectors A'=(2,\ 1,\ -4) B'=(-3,\ 0,\ 1) and C'=(-1,\ -1,\ 2) Calculate the following: 2(B'\cdot3C')=?

tinfoQ

tinfoQ

Answered question

2021-06-06

Let vectors A=(2, 1, 4)
B=(3, 0, 1)
and C=(1, 1, 2)
Calculate the following:
2(B3C)=?

Answer & Explanation

krolaniaN

krolaniaN

Skilled2021-06-07Added 86 answers

Step 1
B=3i^+k^
C=(i^j^+2k^)
Step 2
2(B3C)
=2[(3i^+k^)3(i^j^+2k^)]
=2[9+6]=30

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