2.5.4 - Colon operator
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Practice Questions
Test your understanding with targeted questions
Create a vector from 0 to 10 with a step of 1 using the colon operator.
💡 Hint: Remember the format is `start:step:end`.
What would A(1:2, :) return if A is a 3x3 matrix?
💡 Hint: Think about row selection with the colon operator.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the purpose of the colon operator in MATLAB?
💡 Hint: Think of how you might want to list numbers.
True or False: The command A(:, 3) = [] removes the third row.
💡 Hint: Remember the syntax of indexing.
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Challenge Problems
Push your limits with advanced challenges
Create a matrix of size 5x5, filled with the numbers 1 to 25. Then, using the colon operator, extract the submatrix containing rows 3 to 5 and columns 4 to 5.
💡 Hint: Think about how to reshape a vector into a matrix before extracting.
Suppose you have a matrix M. Using the colon operator, write a command to retrieve the last two rows and all columns of M and set them to zero.
💡 Hint: Think about how 'end' can help you find the last rows.
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