Differential Equations and Linear Algebra (4th Edition)

Published by Pearson
ISBN 10: 0-32196-467-5
ISBN 13: 978-0-32196-467-0

Chapter 3 - Determinants - 3.1 The Definition of the Determinant - Problems: 18

Answer

$-35$

Work Step by Step

For any matrix; \[ \left[ {\begin{array}{cc} a & b \\ c & d \\ \end{array} } \right] \] the determinant equals $ad-bc$. For the matrix; \[ \left[ {\begin{array}{cc} -4 & 7 \\ 1 & 7 \\ \end{array} } \right] \] the determinant equals $-4(7)-1(7)=-35$.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.