MATLAB

Question 1

MATLAB is a program for doing what?

Answer 1

Numerical Computation

Question 2

What type of problems was MATLAB originally designed to solve

Answer 2

Linear algebra-type problems using matrices

Question 3

Is MATLAB a high-level language or slow-level language

Answer 3

MATLAB is a high-level language

Question 4

Where was the MATLAB name derived from

Answer 4

MATrix LABoratory

Question 5

True OR False:
MATLAB is an interpreted language

Answer 5

TRUE

Question 6

The MATLAB language is a _____________ language

Answer 6

A high-level matrix/array language

Question 7

Results of computations made in the command window are saved in variables in the _________

Answer 7

The Workspace

Question 8

The semicolon(;) is used to ___ and _____ the MATLAB output for an expression ( when placed at the end of a statement)

Answer 8

suppress and hide

Question 9

What operator is used to denote a comment?

Answer 9

%

Question 10

what does … do?

Answer 10

It continues the statement on the next line

Question 11

True or False:
Variables must begin with a letter

Answer 11

TRUE

Question 12

True or False:
In MATLAB, some variables are arrays and or matrix.

Answer 12

FALSE!!!
In MATLAB, EVERY variable is an array or matrix.

Question 13

True or False:
variables are NOT case-sensitive

Answer 13

FALSE!!!
Variables ARE case-sensitive

Question 14

True or False:
Variables can be a mix of letters, digits, and underscores

Answer 14

TRUE

Question 15

True or False:
Variables can be more than 63 characters long and can be generic

Answer 15

FALSE Variables can be UP TO 63 characters long and MUST be unique

Question 16

True or False:
Variables may contain blank spaces or other types of punctuation like reserved characters

Answer 16

FALSE!!
Variables may not contain blank spaces or other types of punctuation such as reserved characters: % = + = ~ ; : ! ‘ [] () , @ # $ & ^

Question 17

True or False:
When a semi-colon (;) is placed at the end of each command, the result is displayed

Answer 17

FALSE
When a semi-colon (;) is placed at the end of each command, the result is NOT displayed

Question 18

True or False:
Less than sign (<)

Answer 18

TRUE

Question 19

True or False:
Less Than or Equal sign (=<)

Answer 19

FALSE!!!
The proper sign is (<=)

Question 20

True or False:
Greater Than sign (>)

Answer 20

TRUE

Question 21

True or False:
Greater Than or Equal (>=)

Answer 21

TRUE

Question 22

True or False:
Equal to (=)

Answer 22

FALSE the equal to sign is (==)
whereas the (=) is an assignment

Question 23

True or False:
Not Equal to !=

Answer 23

FALSE!!
In MATLAB the not equal to sign is (~=)

Question 24

What is the default display format

Answer 24

short ( four digits after the decimal point)

Question 25

format long

Answer 25

16 digits

Question 26

format short e

Answer 26

5 digits plus exponent

Question 27

format long e

Answer 27

16 digits plus exponent

Question 28

format hex

Answer 28

hexadecimal

Question 29

format bank

Answer 29

two decimal digits

Question 30

format +

Answer 30

positive, negative or zero

Question 31

format rat

Answer 31

rational number (215/6)

Question 32

format short

Answer 32

default display

Question 33

The who command displays what?

Answer 33

All the variable names that has been used

Question 34

What does the ans mean?

Answer 34

ans is the deault variable name for results/ the most recent answer

Question 35

What does the eps mean?

Answer 35

The smallest incremental number/ accuracy of floating-point precision

Question 36

MATLAB allows for what two types of arithmetic operations?

Answer 36

Matrix arithmetic operations and Array arithmetic operations

Question 37

TRUE OR FALSE: MATLAB the /-right division and the \-left division produces the same result

Answer 37

FALSE!!!! They DO NOT produce the same results

Question 38

A Vectors is a_________

Answer 38

one-dimensional array of numbers

Question 39

TRUE OR FALSE: MATLAB allows creating two types of vectors

Answer 39

TRUE 1. Row vectors 2. Column Vectors

Question 40

TRUE OR FALSE: To add or subtract two vectors the operand vectors can be different type and have different number of elements.

Answer 40

FALSE: BOTH of the operand vectors MUST be of SAME TYPE and have SAME number of elements.

Question 41

What does the transpose (') operation do?

Answer 41

It changes a column vector into a row vector and versa

Question 42

What are the four control flow commands in MATLAB

Answer 42

the for loop, while loop, if-else-end, switch-case

Question 43

Syntax of the for loop

Answer 43

for index = vector statements end

Question 44

Syntax of the while loop

Answer 44

while logical expression statement end

Question 45

When is the while loop used

Answer 45

The loop is used when the programmer does not know the number of repetitions a priori.

Question 46

TRUE OR FALSE: The WHILE loop will continue to repeat a section of code until its conditional statement is true (returns 1)

Answer 46

FALSE!! The WHILE loop will continue to repeat a section of code until its conditional statement is FALSE (returns 0)

Question 47

Syntax of the if statement

Answer 47

if expression commands end

Question 48

Syntax of the if-else

Answer 48

if expression command ( evaluated if expression is else) else command ( evaluated if expression is false) end

Question 49

True or False: The convention for naming functions is the same as for variables

Answer 49

TRUE

Question 50

How do you define a vector?

Answer 50

Define a vector with the (:) operator (begin: interval: end) ex: x = 1:2:9

Question 51

Relational operators for arrays perform ______________ comparisons between two arrays and return a logical array of the same size, with elements set to logical 1(true), and elements set to logical 0 (false)

Answer 51

element-by-element

Question 52

scalar multiplication of vectors

Answer 52

Scalar multiplication produces a new vector of same type with each element of the original vector multiplied by the number