Input and output arguments in MATLAB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a function that takes one input argument.

MATLAB

function result = square[1]
    result = x^2;
end

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

A{x}

B[x]

C(x)

D<x>

Attempts:

3 left

💡 Hint

Common Mistakes

Using square brackets [] instead of parentheses for inputs.

Using curly braces {} which are for cell arrays, not inputs.

In MATLAB, input arguments are enclosed in parentheses ().

2fill in blank

medium

Complete the code to define a function that returns two output arguments.

MATLAB

function [sum, diff] = addAndSubtract[1]
    sum = a + b;
    diff = a - b;
end

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

A(a, b)

B[a, b]

C{a, b}

D<a, b>

Attempts:

3 left

💡 Hint

Common Mistakes

Using square brackets for input arguments.

Using curly braces or angle brackets which are invalid.

Input arguments are always enclosed in parentheses (). Output arguments are enclosed in square brackets [].

3fill in blank

hard

Fix the error in the function definition to correctly specify output arguments.

MATLAB

function [1] = addAndSubtract(a, b)
    sum = a + b;
    diff = a - b;
end

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

A[a, b]

B[sum, diff]

C(a, b)

D(sum, diff)

Attempts:

3 left

💡 Hint

Common Mistakes

Not using square brackets for multiple outputs.

Placing output variables outside brackets or parentheses.

Output arguments must be enclosed in square brackets before the equals sign.

4fill in blank

hard

Fill both blanks to create a function that returns the square and cube of input x.

MATLAB

function [[1], [2]] = powers(x)
    [1] = x^2;
    [2] = x^3;
end

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

Asquare

Bcube

Cpow2

Dpow3

Attempts:

3 left

💡 Hint

Common Mistakes

Using variable names that don't match the assignments inside the function.

Mixing up the order of outputs.

The output variables should be named square and cube to match the assignments inside the function.

5fill in blank

hard

Fill all three blanks to define a function that returns the sum, product, and difference of two inputs.

MATLAB

function [[1], [2], [3]] = calc(a, b)
    [1] = a + b;
    [2] = a * b;
    [3] = a - b;
end

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

Asum

Bprod

Cdiff

Dresult

Attempts:

3 left

💡 Hint

Common Mistakes

Using generic names like result instead of descriptive output names.

Mixing up the order of output variables.

Output variables must be sum, prod, and diff to match the calculations inside the function.