MATLAB Environment and Syntax 3

Question 1

What does the `path` command do in MATLAB?

Accepted Answer

Displays or modifies the MATLAB search path

Answer

The `path` command displays the current MATLAB search path and can be used to add or remove directories from it.

Question 2

In MATLAB, what is the difference between a script and a function file?

Accepted Answer

Functions have their own workspace; scripts share the base workspace

Answer

Functions operate in their own local workspace and can accept inputs/outputs, while scripts run in the base workspace.

Question 3

What does `format long` do in MATLAB?

Accepted Answer

Displays numbers with 15 significant digits

Answer

`format long` switches numeric display to 15 significant digits instead of the default 5 (`format short`).

Question 4

How do you add a comment to a MATLAB script?

Accepted Answer

Use % before the comment text

Answer

The percent sign `%` begins a single-line comment in MATLAB; everything after it on that line is ignored.

Question 5

What is the output of `class(uint8(5))` in MATLAB?

Accepted Answer

uint8

Answer

`class()` returns the data type of a variable as a string, so `class(uint8(5))` returns `'uint8'`.

MATLAB - MATLAB Technical Computing Practice Test