MATLAB Flashcards
What does Matlab stand for?
Matrix Laboratory
What symbol precedes all comments in Matlab?
%
Which of the following is not a pre-defined variable in Matlab
Gravity
This Matlab command clears all data and variables stored in memory
Clear
Characters in Matlab are represented in their value in memory
ASCII
What is not an aspect of a for/while loop
Runner
To better manage memory and prevent unnecessary memory allocations, Matlab uses:
Delayed copy
To print a newline in a fprintf statement, you must use the following escape character l
\n
In Matlab, this keyword immediately moves to the next iteration of the loop
continue
Which of the following will correctly define x,y, and z as symbols?
syms x y z/ syms xyz
Which of the these is the way to access the first element in a vector named v (assuming there is at least one element in the vector)?
v(1)
Which of the following is used to see of two elements are equal in MATLAB?
=
If vector = [1 2 3 4; 11 24 92 100; 345 65 90 1]. What will the value of a be equal to if this code is entered into Matlab»_space; [ a b ] = size (vector)?
1 2 3 4
What is the value of ans that is printed when the following code is run: isnumeric(32)
1
If I want to save a formatted string to memory, but don’t want to print it out, which command should I use?
sprintf
When used in the fprintf, the %g is used as
Default number display
When used in the fprintf command, the \n is used to
Add a line space (enter key)
To display ‘Question 2’ in the command window, the correct command is
disp(‘Question 2’)
The clc command is used to
Clear the command window
The num2str command
Converts a number to string
“The output of the last line is
aa=2
as=num2str(a2.
cat=[‘cat’ as]
cat1
To join one or more strings into a single string is known as
Concatenation
The output of cat=[‘cat’ ‘dog’] is
catdog
Which functions help you to save and load variables?
Expl. There is a pre-defined function in MATLAB to store the variable values from your workspace permanently called “save filename”
> > save Lays a b
load (‘myfile.mat’)
To display comments of M-file, we use ______
echo on
Where do we need to store a function to call it in other programs?
The bin folder
What are the difference between the ‘help’ and the ‘look for’ command?
Expl.
Help = command is used to return all the commands surrounding a particular toolbox name entered along with it.
Look for = command is used to return a particular function or set function or set of functions whose name matches with the keyword entered
Help returns the entire set while look for returns specific commands
“What will the following set of commands do when they are present in a script file?
stem[y1, y2];
title(‘p’)
print -deps l
Store the graph as a separate file
The function to close the windows containing graphs generated from MATLAB is
Close all
What is not displayed by the workspace?
Time of variable generation
MATLAB allows modelling of different control systems using ______
Simulink
How to stop the execution of a chain of commands?
Press ctrl + c
What are MEX files in MATLAB?
Allows the user to combine C source files with MATLAB files
Explain what is MATLAB? Where MATLAB may be applicable?
MATLAB is a high-level programming language with an interactive surroundings for visualization, numerical computation and programming characteristic.
What does MATLAB consist of?
MATLAB includes five fundamental parts
Matlab language
Matlab running environment
Handle graphics
Matlab function library
Matlab application program interface (API)
To add a comment to the mfile, the Matlab command is
%
