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05-08-2020
Mathematics

contestada

17. Which one is the determinant of the given matrix A=
7 0 7
0 6 5
0 0 9
D. 54
C. 378
A. 21
B. 758

Respuesta :

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05-08-2020

Answer:

The determinant as posted is 378

Step-by-step explanation:

Given matrix

7 0 7

0 6 5

0 0 9

Since it is an upper triangular matrix, we just need to expand along the main diagonal, namely 7*(6*9 - 5*0) = 378

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