MATLAB Script and Function Creation 2

Question 1

What is the correct way to define a function that returns multiple output values in MATLAB?

Accepted Answer

function [a, b] = myFunc(x)

Answer

Multiple return values are declared in square brackets on the left side of the assignment in the function signature.

Question 2

Which command clears all variables from the MATLAB workspace at the start of a script?

Accepted Answer

clear all

Answer

`clear all` removes all variables, globals, and functions from the workspace.

Question 3

In a MATLAB function file, where must the primary function definition appear?

Accepted Answer

At the top of the file before any other code

Answer

MATLAB requires the primary function to be the first function defined in a function file.

Question 4

What happens when a MATLAB script is run and a variable with the same name already exists in the workspace?

Accepted Answer

The existing variable is overwritten

Answer

Scripts share the caller's workspace, so running a script overwrites any existing variable of the same name.

Question 5

Which keyword is used to exit a function early in MATLAB before reaching the end?

Accepted Answer

return

Answer

`return` immediately exits the current function and returns control to the calling code.

MATLAB - MATLAB Technical Computing Practice Test