EGR 1400
EGR 1400 Exam 3 Study Questions
and Answers Updated 2026
Table
A rectangular array of data
script file
a sequence of MATLAB commands also called
program (also called M-files)
- Must begin with a letter
- Can be up to 63 characters long (31 in MATLAB 6)
- Can contain letters, digits, and the underscore characters - MATLAB is case sensitive
- No space is allowed
- No use of built-in functions
Rules about variable names:
Array
a fundamental form that MATLAB uses to store and manipulate data
An array
a list of numbers arranged in rows and/or columns
characters (strings)
In addition to arrays of numbers, arrays in MATLAB can be made of a list of
True
Tables can be usually converted to arrays
True
In MATLAB a vector is created by assigning the elements of the vector to a variable
- By known list of numbers (row, column) or functions
- By specifying the first, the spacing, and the last term (with or without brackets,
EGR 1400
,EGR 1400
forward and backward)
- By specifying the first and last terms, and the number of terms (linspace command)
Creating a vector can be done in several ways:
False
The rule in creating a matrix is that some of the rows must have the same number of
elements
- By known list of numbers (row, column) or functions
- By specifying the first, the spacing, and the last term
- By specifying the first and last terms, and the number of terms (linspace command)
Creating a matrix can be done in several ways:
False
Not all variables in MATLAB are arrays
• Vector:v(:);v(m:n)
• Matrix:A(:,n);A(n,:);A(:,m:n);A(m:n,:);A(m:n,p:q)
Using a colon to address a range of elements in vector or matrix
True
Adding an element which is beyond the size of a matrix, similar as in vector case, will
result in added zeros
length(A), size(A), reshape(A, m, n), diag(v), diag(A)
Built-in functions for handling arrays
String
an array of characters
True
Strings use single quotes, and can include letters, digits, other symbols and space in
MATLAB
EGR 1400
, EGR 1400
- Output commands to display text messages
- Formatting commands of plots
- Input arguments of some functions
Use of strings in MATLAB:
True
We can modify a string, by accessing one character or a set of characters within the
original string
False
Strings can't be stored in a matrix
True
Strings can also be stored in a matrix
Info = char('Student Name:','John Smith','Grade:','A')
Built-infunction char:
False
A string made up of the digits is the same as the number itself
True
A string made up of the digits is different than the number itself
field
Each column of the table, called a _____ contains the same type of information
record
Each row, called a _____, contains all the information about one entry in the table
true
Databases contain one or more related tables
Access, Oracle, SQL Server
Examples of DBMS
EGR 1400
EGR 1400 Exam 3 Study Questions
and Answers Updated 2026
Table
A rectangular array of data
script file
a sequence of MATLAB commands also called
program (also called M-files)
- Must begin with a letter
- Can be up to 63 characters long (31 in MATLAB 6)
- Can contain letters, digits, and the underscore characters - MATLAB is case sensitive
- No space is allowed
- No use of built-in functions
Rules about variable names:
Array
a fundamental form that MATLAB uses to store and manipulate data
An array
a list of numbers arranged in rows and/or columns
characters (strings)
In addition to arrays of numbers, arrays in MATLAB can be made of a list of
True
Tables can be usually converted to arrays
True
In MATLAB a vector is created by assigning the elements of the vector to a variable
- By known list of numbers (row, column) or functions
- By specifying the first, the spacing, and the last term (with or without brackets,
EGR 1400
,EGR 1400
forward and backward)
- By specifying the first and last terms, and the number of terms (linspace command)
Creating a vector can be done in several ways:
False
The rule in creating a matrix is that some of the rows must have the same number of
elements
- By known list of numbers (row, column) or functions
- By specifying the first, the spacing, and the last term
- By specifying the first and last terms, and the number of terms (linspace command)
Creating a matrix can be done in several ways:
False
Not all variables in MATLAB are arrays
• Vector:v(:);v(m:n)
• Matrix:A(:,n);A(n,:);A(:,m:n);A(m:n,:);A(m:n,p:q)
Using a colon to address a range of elements in vector or matrix
True
Adding an element which is beyond the size of a matrix, similar as in vector case, will
result in added zeros
length(A), size(A), reshape(A, m, n), diag(v), diag(A)
Built-in functions for handling arrays
String
an array of characters
True
Strings use single quotes, and can include letters, digits, other symbols and space in
MATLAB
EGR 1400
, EGR 1400
- Output commands to display text messages
- Formatting commands of plots
- Input arguments of some functions
Use of strings in MATLAB:
True
We can modify a string, by accessing one character or a set of characters within the
original string
False
Strings can't be stored in a matrix
True
Strings can also be stored in a matrix
Info = char('Student Name:','John Smith','Grade:','A')
Built-infunction char:
False
A string made up of the digits is the same as the number itself
True
A string made up of the digits is different than the number itself
field
Each column of the table, called a _____ contains the same type of information
record
Each row, called a _____, contains all the information about one entry in the table
true
Databases contain one or more related tables
Access, Oracle, SQL Server
Examples of DBMS
EGR 1400
