Evaluate the determinant
-$\left|\begin{array}{rrr}9 & -1 & 7 \ 0 & 4 & 5 \ 0 & 0 & -8\end{array}\right|$
A) 288
B) 283
C) -293
D) -288

Name: Evaluate the determinant -$\left|\begin{array}{rrr}9 & -1 & 7 \\ 0 & 4 & 5 \\ 0 & 0 & -8\end{array}\right|$ A) 288 B) 283 C) -293 D) -288
Brand: Quizplus
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Question

Quizplus · Accepted Answer

The determinant of a triangular matrix (either upper or lower triangular) is the product of its diagonal elements. Thus, the determinant is $9 \times 4 \times (-8) = -288$.

Evaluate the Determinant - ∣9−1704500−8∣\left|\begin{array}{rrr}9 & -1 & 7 \\ 0 & 4 & 5 \\ 0 & 0 & -8\end{array}\right|​900​−140​75−8​​

Evaluate the Determinant
- $\left|\begin{array}{rrr}9 & -1 & 7 \\ 0 & 4 & 5 \\ 0 & 0 & -8\end{array}\right|$