Test your knowledge of MATLAB with this quiz. Determine the output of the code snippet and understand the functionality of 'a(:,[2 3])'. If a = [1 2 3; 4 5 6; 7 8 9], what does 'b = a(:,[2 3])' result in?

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Questions and Answers

What is the output of the code snippet?

[2 3; 5 6; 8 9]

If a = [1 2 3; 4 5 6; 7 8 9], what does 'b = a(:,[2 3])' result in?

[2 3; 5 6; 8 9]

What does 'a(:,[2 3])' do in MATLAB?

Selects all rows and columns 2 and 3 from matrix a

Study Notes

MATLAB Code Snippet

Given a matrix a = [1 2 3; 4 5 6; 7 8 9]
The code b = a(:, [2 3]) extracts columns 2 and 3 from matrix a and assigns the result to b

MATLAB Matrix Operations

a(:, [2 3]) is a MATLAB syntax to extract columns 2 and 3 from matrix a
The : operator denotes all rows, while [2 3] specifies the columns to extract