MATLAB Commands
Linear Algebra
Loops
Boolean
Mystery
100
What does the command 'clc' do?
Clears the command window
100
Is it possible to multiply a 2x3 by a 4x3
What is no?
100
For what condition would you choose to use a while-loop rather than a for-loop?
When looping is needed but the number of passes is not known in advance.
100
This symbol ⊕
What is the exclusive or (XOR) symbol?
100
This is used in MATLAB when you've written code that makes no sense but you’re too afraid to delete it.
What is % comment it out and pretend it never happened?
200
Give dimensions of an array A using MATLAB
What is size(A)?
200
How would you compute sin(x/2)*x^2 for every element in matrix x
What is sin(x/2).*x.^2
200
How many times will a for loop iterate?
What is as many times in the conditional statement?
200
You overslept. Let:
A = "I set an alarm"
B = "I actually woke up"
The Boolean expression is:
A AND B
If A = 1 (true), but B = 0 (false), what’s the result of A AND B?
What is 0 — because setting an alarm means nothing if you still sleep through it! 😴⏰
200
What is the difference between disp and fprintf?
What is:
disp is used to quickly display text or variable values without formatting, while fprintf allows formatted output, including control over spacing, decimal places, and inserting variables into strings.
300
If you have 6 graphs in one window arranged in a 2x3 configuration. How would you edit the bottom middle one.
What is subplot(2,2,5)?
300
What is the augmented matrix if :
A = [2 3 -1;
-4 1 5;
1 -2 3];
d = [5; -2; 4];
What is [A d]?
300
sum = 0;
for i = 1:5
sum = sum + i;
end
What is 15?
300
What is the truth table for a NOT XOR
Drawn on board
300
What type of Arduino sensor is used to measure distance?
ultrasonic sensor
400
What is diag(4:-1:1)?
4 0 0 0
0 3 0 0
0 0 2 0
0 0 0 1
400
What is the MATLAB command to solve a system of equations when A is the coefficient matrix and d is the constant vector?
what is rref([A d])?
400
How many times will this while loop iterate?
x = 0
y = 0
while x < 10
if y == 0
x = x+1
end
y = 1
end
What is infinite?
400
This symbol:
What is NOR symbol?
400
What is the voltage on a button pin when a button is NOT pressed?
5 V
500
The MATLAB command to read to from an excel file titled info
what is xlsread("info.xlsx")
500
What is the dimensions of the resulting matrix from multiplying 1x3 by a 7x3?
What is trick question it's not possible?
500
Blink an LED on pin D5 for 3 dashes. Each blink lasts 0.6 seconds, with 0.2 second pauses between blinks.
for x = 1:3
MyArduino.writeDigitalPin('D5', 1)
pause(0.6)
MyArduino.writeDigitalPin('D5', 0)
pause(0.2)
end
500
Truth table for the following:
!((A⋅B)+!(C⋅D))
On Board
500
True or False, an Arduino is an example of a Microprocessor.
FALSE