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MATLAB Special Variables and Constants Quiz

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MATLAB Special Variables and Constants Quiz

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Questions and Answers

What command should be used to display all 15 digits of a number in MATLAB?

format long

How can you delete variables 'a' and 'b' from the workspace in MATLAB?

clear a b;

What operator is used for array multiplication in MATLAB?

Which operator is used for array right-division in MATLAB?

./ Signup and view all the answers

What does the colon ':' operator do in MATLAB?

generates regularly spaced elements and represents an entire row or column Signup and view all the answers

What do parentheses '()' do in MATLAB?

encloses function arguments and array indices; overrides precedence Signup and view all the answers

What is the purpose of the semicolon in MATLAB?

Semicolon separates columns and suppresses display. Signup and view all the answers

What does the special variable 'ans' represent in MATLAB?

The most recent answer. Signup and view all the answers

What does the special variable 'eps' represent in MATLAB?

Accuracy of floating-point precision. Signup and view all the answers

How do you create MATLAB variables?

Simply assign a value (or an expression) to a variable name in the command window. Signup and view all the answers

What does the imaginary unit 'i' represent in MATLAB?

The imaginary unit √-1. Signup and view all the answers

How can you view the contents of a variable in MATLAB?

By typing the variable name at the MATLAB prompt in the Command Window. Signup and view all the answers

What happens when you overwrite a variable in MATLAB?

The variable gets updated with the new assigned value. Signup and view all the answers

What does 'NaN' represent in MATLAB?

NaN represents an undefined numerical result (not a number). Signup and view all the answers

What does 'Pi' represent in MATLAB?

The number π. Signup and view all the answers

How can you enter multiple statements per line in MATLAB?

By separating the statements with a semicolon. Signup and view all the answers

What happens when you encounter an error message in MATLAB?

You will be notified of the error, and you can correct it by retyping the command. Signup and view all the answers

How can you control the hierarchy of operations or precedence in MATLAB?

By using parentheses to specify the order of operations. Signup and view all the answers