Special matrices (zeros, ones, eye, rand) in MATLAB - Mini Project: Build & Apply

Creating Special Matrices in MATLAB

📖 Scenario: You are working on a simple MATLAB project where you need to create different types of special matrices. These matrices are often used in math and engineering to start calculations or set up initial values.

🎯 Goal: Learn how to create zeros, ones, eye (identity), and rand matrices in MATLAB and display them.

📋 What You'll Learn

Create a 3x3 matrix of zeros called zeroMat

Create a 2x4 matrix of ones called oneMat

Create a 4x4 identity matrix called eyeMat

Create a 3x2 matrix of random numbers called randMat

Display all matrices using disp

💡 Why This Matters

🌍 Real World

Special matrices are used in engineering, computer graphics, and scientific computing to initialize data and perform calculations efficiently.

💼 Career

Knowing how to create and use these matrices is essential for jobs in data science, engineering, and software development involving numerical computations.

1

Create a 3x3 matrix of zeros

Create a variable called zeroMat and set it to a 3 by 3 matrix of zeros using the zeros function.

MATLAB

# Create a 3x3 matrix of zeros called zeroMat
% Your code here

Need a hint?

Use the zeros(rows, columns) function to create a matrix filled with zeros.

2

Create a 2x4 matrix of ones

Create a variable called oneMat and set it to a 2 by 4 matrix of ones using the ones function.

MATLAB

zeroMat = zeros(3, 3);
% Create a 2x4 matrix of ones called oneMat
% Your code here

Need a hint?

Use the ones(rows, columns) function to create a matrix filled with ones.

3

Create a 4x4 identity matrix

Create a variable called eyeMat and set it to a 4 by 4 identity matrix using the eye function.

MATLAB

zeroMat = zeros(3, 3);
oneMat = ones(2, 4);
% Create a 4x4 identity matrix called eyeMat
% Your code here

Need a hint?

Use the eye(n) function to create an n by n identity matrix.

4

Create a 3x2 matrix of random numbers and display all matrices

Create a variable called randMat and set it to a 3 by 2 matrix of random numbers using the rand function. Then display all matrices zeroMat, oneMat, eyeMat, and randMat using disp.

MATLAB

zeroMat = zeros(3, 3);
oneMat = ones(2, 4);
eyeMat = eye(4);
% Create a 3x2 matrix of random numbers called randMat
% Display zeroMat, oneMat, eyeMat, and randMat
% Your code here

Need a hint?

Use rand(rows, columns) to create random numbers between 0 and 1. Use disp to show each matrix with a label.