Question

In Problem, find

$v=-i-j$

Short answer

The magnitude of v,$\left|v\right|=\sqrt{2}$

Step-by-step solution

Step 1, Given the information

$v=-i-j$

WE know that if v (a,b) then the magnitude of v,

$\left|v\right|=\sqrt{a^2+b^2}$

Step2. Calculating the magnitude 

$v=-i-j$

Compare a and b with -1 and -1

so the magnitude of v,

$$\begin{gathered} \left|v\right|=\sqrt{{\left(-1\right)}^2+{\left(-1\right)}^2} \\ \left|v\right|=\sqrt{2} \end{gathered}$$