Question

Given a Matrix A = [1:5; 6:10; 11:15; 16:20],
1. Create a row vector of 1's that has same number of elements as A has rows.
2. Create a column vector of 1's that has same number of elements as A has columns.
3. Using matrix multiplication, assign the product of the row vector, the matrix A, and the column vector (in this order) to the variable "result".

Answer 1

The answers to the questions are as follows:

1. Row vector of 1's that has the same number of elements as A has rows.

Row_vector = ones(1,size(A,1));

2. Column vector of 1's that has same number of elements as A has columns.

Column_vector=ones(size(A,2),1);

3. Using matrix multiplication, assign the product of the row vector, the matrix A, and the column vector (in this order) to the variable "result".

result = Row_vector*A*Column_vector;

Answer 2

Answer:

Value of result =210

Step-by-step explanation:

Row=[1 1 1 1]

Column=[1;1;1;1;1]

result=Row*A*Column