Help system and documentation in MATLAB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to display help for the function plot.

MATLAB

help [1]

Drag options to blanks, or click blank then click option'

Aaxis

Bfigure

Cplot

Dtitle

Attempts:

3 left

💡 Hint

Common Mistakes

Using a command that is not a function name after help.

Forgetting to type the function name after help.

The help command followed by a function name shows its documentation. Here, help plot displays help for the plot function.

2fill in blank

medium

Complete the code to open the documentation page for the sum function.

MATLAB

doc [1]

Drag options to blanks, or click blank then click option'

Asum

Bmean

Cmax

Dmin

Attempts:

3 left

💡 Hint

Common Mistakes

Typing a function name different from the one intended.

Using help instead of doc when the graphical documentation is needed.

The doc command opens the detailed documentation page for the specified function. Here, doc sum opens the documentation for the sum function.

3fill in blank

hard

Fix the error in the code to display help for the mean function.

MATLAB

help [1]

Drag options to blanks, or click blank then click option'

AMean

BmeAn

CMEAN

Dmean

Attempts:

3 left

💡 Hint

Common Mistakes

Using uppercase or mixed case letters in the function name.

Forgetting that MATLAB is case-sensitive for help commands.

MATLAB function names are case-sensitive in the help command. The correct lowercase mean shows the help text.

4fill in blank

hard

Fill both blanks to create a custom help comment block for a function named myFunc with a description line.

MATLAB

% [1] - [2]
function output = myFunc(input)
% Your code here
end

Drag options to blanks, or click blank then click option'

AmyFunc

BCalculates the sum

CComputes the average

Dinput

Attempts:

3 left

💡 Hint

Common Mistakes

Putting the description before the function name.

Using variable names instead of the function name in the comment.

The first line of a MATLAB function help block starts with the function name, followed by a hyphen and a short description. Here, % myFunc - Calculates the sum is correct.

5fill in blank

hard

Fill all three blanks to write a help comment block with function name calcArea, description Calculates area of a circle, and input description radius of the circle.

MATLAB

% [1] - [2]
% Input:
%   [3]
function area = calcArea(r)
area = pi * r^2;
end

Drag options to blanks, or click blank then click option'

AcalcArea

BCalculates area of a circle

Cradius of the circle

Dcircle radius

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up the order of function name and description.

Using incorrect input variable names in the comment.

The first line is the function name and description. The input description follows with the input variable name and explanation. This helps users understand the function and its inputs.