vectors

[-EquinoX-]

1. The problem statement, all variables and given/known data

what is the magnitude of the vector:

v = 3i - 4j - k

2. Relevant equations



3. The attempt at a solution

what I have is:

sqrt(3^2 + (-4)^2 + (-1)^2)

is this correct?

[Mark44]

It's correct, but should be simplified. Carry out the operations in the outer parentheses so that your answer is the square root of a single number.

[-EquinoX-]

hmm..the question asks for an exact answer... so should it just be sqrt(26)

[Mark44]

That ***is*** the exact answer.