What is || <-1, -9, -2 > - < -2 , -4, 1 > ||?

1 Answer
Narad T.
Nov 5, 2016

The answer =sqrt35

Explanation:

First, we start by subtracting the vectors
∥〈-1,-9,-2〉-〈-2,-4,1〉∥=∥〈-1+2,-9+4,-2-1〉∥
=∥〈1,-5,-3〉∥
Then we calculate the modulus
=sqrt(1+25+9)
=sqrt35

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