Question

Multiply the 1x4 matrix by 5: [4 1 3 -2].

A. [20 5 15 -10]
B. [9 6 20 -8]
C. [4 5 12 -10]
D. [4 1 3 -2]

Answer 1

The multiplication of the 1x4 matrix [4 1 3 -2] by 5 is performed by multiplying each element by 5, resulting in the matrix [20 5 15 -10].

Step-by-step explanation:

To multiply the 1x4 matrix [4 1 3 -2] by 5, you simply multiply each element of the matrix by 5. Here's how it's done step-by-step:

1. Multiply the first element (4) by 5: 4 * 5 = 20.
2. Multiply the second element (1) by 5: 1 * 5 = 5.
3. Multiply the third element (3) by 5: 3 * 5 = 15.
4. Multiply the fourth element (-2) by 5: -2 * 5 = -10.

So, the resulting 1x4 matrix after multiplying by 5 is [20 5 15 -10].