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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Write the command to extract rows 1 and 2 from matrix A.
💡 Hint: Use brackets to specify row indices.
Question 2
Easy
What does A(:, 1) return for matrix A?
💡 Hint: Remember the colon operator selects all rows.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the syntax to create a sub-matrix from rows 1 and 3, and columns 2?
- A([1 3]
- [2])
- A([1
- 3]
- [2])
- A([1 3
- 2])
💡 Hint: Look for the correct use of list syntax for indices.
Question 2
True or False: You can use a colon operator to reference all elements in a column.
- True
- False
💡 Hint: Consider how data selection works in sections.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given matrix D = [3 1 4; 1 5 9; 2 6 5], write code to create a sub-matrix that includes all rows but only the first two columns.
💡 Hint: Focus on how to include all rows and only apply a range to the columns.
Question 2
If you have a matrix E = [1 2 3; 4 5 6; 7 8 9; 10 11 12], how would you extract a sub-matrix containing rows 3 to 4 and columns 1 to 2?
💡 Hint: Identify which rows to select and which columns to slice from.
Challenge and get performance evaluation