Answer
$-12$
Work Step by Step
RECALL:
$\begin{vmatrix} a & b \\ c & d \end{vmatrix}=ad-bc$
Use the definition above to obtain:
$\begin{vmatrix} -4 & 0 \\ 5 & 3 \end{vmatrix}=-4\cdot3-0\cdot5=-12-0=-12$
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 9 - Polar Coordinates; Vectors - 9.7 The Cross Product - 9.7 Assess Your Understanding - Page 631: 10
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