Question

What is the product?

3.[ 1 -4 5 -7]

a. [3 -12 15 -21]
b. [4 -1 8 -4]
c. [3 12 15 21]
d. [4 -12 8 -21]

Answer 1

(a) [3 -12 15 -21]

Explanation:

Given;

3.[ 1 -4 5 -7]

The product of the function is calculated as;

3.[ 1 -4 5 -7] = [1 x 3 -4x3 5x3 -7x3]

= [3 -12 15 -21]

Therefore the correct option is "a" [3 -12 15 -21]