18 Questions
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?
./
What does the colon ':' operator do in MATLAB?
generates regularly spaced elements and represents an entire row or column
What do parentheses '()' do in MATLAB?
encloses function arguments and array indices; overrides precedence
What is the purpose of the semicolon in MATLAB?
Semicolon separates columns and suppresses display.
What does the special variable 'ans' represent in MATLAB?
The most recent answer.
What does the special variable 'eps' represent in MATLAB?
Accuracy of floating-point precision.
How do you create MATLAB variables?
Simply assign a value (or an expression) to a variable name in the command window.
What does the imaginary unit 'i' represent in MATLAB?
The imaginary unit √-1.
How can you view the contents of a variable in MATLAB?
By typing the variable name at the MATLAB prompt in the Command Window.
What happens when you overwrite a variable in MATLAB?
The variable gets updated with the new assigned value.
What does 'NaN' represent in MATLAB?
NaN represents an undefined numerical result (not a number).
What does 'Pi' represent in MATLAB?
The number π.
How can you enter multiple statements per line in MATLAB?
By separating the statements with a semicolon.
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.
How can you control the hierarchy of operations or precedence in MATLAB?
By using parentheses to specify the order of operations.
Test your knowledge on special variables and constants in MATLAB. Questions cover special variables like 'ans' and 'Eps', as well as constants with specific meanings like 'Most recent answer' and 'Accuracy of floating-point'.
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