MATLAB Function Files Quiz

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In MATLAB, what does the default variable 'ans' refer to?

An output variable (correct)
A workspace variable
A reserved keyword
A specific function

What is the purpose of using the 'diary' command in MATLAB?

Deletes variables from the workspace
Clears the Command Window
Records a complete MATLAB session (correct)
Starts a new MATLAB session

When viewing online documentation for a specific function in MATLAB, which command should be used?

assistance
info (correct)
help
man

What distinguishes array operations from matrix operations in MATLAB?

Underscore (_) (D) Signup and view all the answers

In MATLAB, how is the solution to a system of simultaneous linear equations Ax = b written?

x = inv(A) * b (A) Signup and view all the answers

Which operator is used for exponentiation in MATLAB?

<ul> <li>(C)</li> </ul> Signup and view all the answers

What operation does the MATLAB command in the text perform on matrix A?

Matrix multiplication of A with itself (B) Signup and view all the answers

Which command is NOT used for calculating the inverse of a scalar value in MATLAB?

scalar_inverse() (C) Signup and view all the answers

What is the function of the MATLAB command 'clc'?

Clears the workspace (B) Signup and view all the answers

Which type of file contains a sequence of commands that can be saved and executed repeatedly in MATLAB?

.m file (D) Signup and view all the answers

In MATLAB, what is another term used for script files?

M-files (D) Signup and view all the answers

Which tool is recommended for writing and editing M-files in MATLAB?

MATLAB editor (B) Signup and view all the answers

What is the correct MATLAB syntax to calculate the inverse of matrix A?

inv(A) (D) Signup and view all the answers

In the given example, what is the sum of the elements in the first row of matrix A?

6 (A) Signup and view all the answers

Which MATLAB function should be used to compute eigenvalues only, excluding eigenvectors?

eig() (A) Signup and view all the answers

When multiplying two matrices in MATLAB, which operator should be used for element-wise multiplication?

. (B) Signup and view all the answers

What does the MATLAB function 'diag' primarily do when applied to a matrix?

Computes diagonal matrices and diagonals of a matrix (C) Signup and view all the answers

For a square matrix A in MATLAB, what does the command 'A^2' represent?

Matrix multiplication of A with itself (D) Signup and view all the answers

What is the primary purpose of M-File functions in MATLAB?

To accept input arguments and return output arguments (A) Signup and view all the answers

Which keyword indicates the start of a function in MATLAB?

function (D) Signup and view all the answers

What part of an M-File function contains the actual computations?

Function body (C) Signup and view all the answers

How are input arguments specified in the function definition line?

Inside parentheses following the function name (D) Signup and view all the answers

What is the potential issue with script files regarding variable scope?

Variables may overwrite existing workspace variables (C) Signup and view all the answers

Which command is useful for generating displays or outputs in MATLAB?

disp (D) Signup and view all the answers

What is the primary difference between disp and fprintf commands in MATLAB?

disp provides total control, and fprintf is simple to use (D) Signup and view all the answers

Which command is used to plot graphs in MATLAB?

plot (C) Signup and view all the answers

How can you comment multiple lines in a script file in MATLAB?

.- (D) Signup and view all the answers

What function is used to find the factorial of a number in MATLAB?

factorial (C) Signup and view all the answers

Which file extension is recommended for saving an M-file function named 'calculateAverage'?

.m (C) Signup and view all the answers