Question

What is the product: -4[ 8 -1 -5 9

A: [-32 4 20 -36] B: [32 -4 -20 36] C: [4 -5 -9 5] C: [-32 -1 -5 9]

Answer 1

A

Explanation:

To find the product of -4 and the vector [8, -1, -5, 9], you need to multiply each element of the vector by -4. Here's the calculation:

-4 * 8 = -32

-4 * -1 = 4

-4 * -5 = 20

-4 * 9 = -36

Therefore, the product of -4 and [8, -1, -5, 9] is:

[-32, 4, 20, -36]

So the correct answer is A: [-32, 4, 20, -36].