Question 1202b

Vectors I: Basics, Dot and Cross Products

Perpendicular Vectors

Question

Given that the vectors

{\begin{pmatrix} 4 \\ - 5 \\ - 4 \end{pmatrix}}

and

{\begin{pmatrix}p\\4\\- 2\end{pmatrix}}

are perpendicular, what is the value of

{p?}

{p= }