Matlab- Round Brackets

Question 1

to enter most data in Matlab you need to use

Answer 1

brackets []

Question 2

how do you put data into a column vector?

Answer 2

type the values in square brackets and separate them by using ;

Question 3

how would the data look like? D = [3; 1; 6; 5]

Answer 3

D = 3
1
6
5

Question 4

how do you put data into a matrix?

Answer 4

use , to separate the number (rows) and use ; to separate lines (column)

Question 5

how would this look like?
E = [1, 2, 3; 4, 5, 6]

Answer 5

E = 1 2 3
4 5 6

Question 6

round brackets () are used for?

Answer 6

to refer to a part of a matrix

Question 7

if you used E(2,3) and the matrix was
E = 1 2 3
4 5 6
what would be the output?

Answer 7

ans = 6

(explanation: the first number refers to the rows, the second number refers to the columns)

Question 8

what would be the output for this?

E(4,3)
matrix:
E = 1 2 3
4 5 6

Answer 8

error message

explanation: it calls for numbers that don’t exist in the matrix.

Question 9

how do you change numbers of a matrix using round brackets

Answer 9

In one line: call the matrix, use brackets, in the brackets establish the place in the matrix, use = to replace the number in that location

Question 10

what would the line of code be to change
matrix: E = 1 2 3
4 5 6
to this:
E = 1 2 10
4 5 6

Answer 10

E (1,3) = 10

Question 11

how would you change an entire row in a matrix?

Answer 11

use round brackets and square brackets

Question 12

how would you add a row or column into a matrix?

Answer 12

use round brackets, a colon to call the entire row or column and then = and square brackets to insert the new numbers.

note: the dimensions have to stay the same.