MATLAB Basic Introduction 2

Question 1

Which MATLAB function displays output to the Command Window without suppressing it?

Accepted Answer

Both disp() and fprintf()

Answer

Both disp() and fprintf() print output to the Command Window, though fprintf() offers more formatting control.

Question 2

What does the semicolon (;) do when placed at the end of a MATLAB statement?

Accepted Answer

Suppresses output to the Command Window

Answer

A semicolon at the end of a statement suppresses its output from being printed to the Command Window.

Question 3

In MATLAB, what is the result of 5 \ 20?

Accepted Answer

4

Answer

The left-division operator (\) computes 20/5 = 4, solving x such that 5*x = 20.

Question 4

How do you create a row vector of integers from 1 to 10 with step 2 in MATLAB?

Accepted Answer

1:2:10

Answer

The colon syntax start:step:end creates a row vector; 1:2:10 produces [1 3 5 7 9].

Question 5

Which of the following correctly accesses the element in row 2, column 3 of matrix M?

Accepted Answer

M(2,3)

Answer

MATLAB uses parentheses for indexing, so M(2,3) retrieves the element at row 2, column 3.

MATLAB - MATLAB Technical Computing Practice Test