Answer
See solution
Work Step by Step
Construct matrix $A=[v_1\ \ v_2]$
The area of the triangle is half the area of the parallelogram: $\frac{|det [v_1\ \ v_2]|}{2}$
Linear Algebra and Its Applications (5th Edition)
by Lay, David C.; Lay, Steven R.; McDonald, Judi J.
Published by
Pearson
ISBN 10:
032198238X
ISBN 13:
978-0-32198-238-4
Chapter 3 - Determinants - 3.3 Exercises - Page 187: 29
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