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Introduction to Linear Algebra

Exercise 2.4.1

Answers

If all entries of $A, B, C, D$ are $1$ , then

1.: $BA = 3 ones (5)$ is $5$ by $5$ ;
2.: $AB = 5 ones (3)$ is $3$ by $3$ ;
3.: $ABD = 15 ones (3, 1)$ is $3$ by $1$ ;
4.: $DC$ and $A (B + C)$ are not defined.

mathchakra

2021-12-06 17:18

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