# What is the magnitude of the vector

## Homework Statement

what is the magnitude of the vector:

v = 3i - 4j - k

## The Attempt at a Solution

what I have is:

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

is this correct?

Mark44
Mentor

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.

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

Mark44
Mentor