2
EGR 1400 Exam 3 with precise detailed answers || || || || || || ||
A rectangular array of data - ✔✔Table
|| || || || || ||
a sequence of MATLAB commands also called
|| || || || || ||
program (also called M-files) - ✔✔script file || || || || || ||
Rules about variable names: - ✔✔- 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
|| || || || ||
a fundamental form that MATLAB uses to store and manipulate data - ✔✔Array
|| || || || || || || || || || || ||
a list of numbers arranged in rows and/or columns - ✔✔An array
|| || || || || || || || || || ||
In addition to arrays of numbers, arrays in MATLAB can be made of a list of - ✔✔characters
|| || || || || || || || || || || || || || || || ||
(strings)
||
Tables can be usually converted to arrays - ✔✔True
|| || || || || || || ||
In MATLAB a vector is created by assigning the elements of the vector to a variable -
|| || || || || || || || || || || || || || || || ||
✔✔True
,2
Creating a vector can be done in several ways: - ✔✔- By known list of numbers (row,
|| || || || || || || || || || || || || || || || ||
column) or functions || ||
- By specifying the first, the spacing, and the last term (with or without brackets, forward
|| || || || || || || || || || || || || || || ||
and backward) ||
- By specifying the first and last terms, and the number of terms (linspace command)
|| || || || || || || || || || || || || ||
The rule in creating a matrix is that some of the rows must have the same number of
|| || || || || || || || || || || || || || || || || ||
elements - ✔✔False || ||
Creating a matrix can be done in several ways: - ✔✔- 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)
|| || || || || || || || || || || || || ||
Not all variables in MATLAB are arrays - ✔✔False
|| || || || || || || ||
Using a colon to address a range of elements in vector or matrix - ✔✔• Vector:v(:);v(m:n)
|| || || || || || || || || || || || || || ||
• Matrix:A(:,n);A(n,:);A(:,m:n);A(m:n,:);A(m:n,p:q)
||
Adding an element which is beyond the size of a matrix, similar as in vector case, will result
|| || || || || || || || || || || || || || || || ||
in added zeros - ✔✔True
|| || || || ||
Built-in functions for handling arrays - ✔✔length(A), size(A), reshape(A, m, n), diag(v),
|| || || || || || || || || || || ||
diag(A)
an array of characters - ✔✔String
|| || || || ||
, 2
Strings use single quotes, and can include letters, digits, other symbols and space in
|| || || || || || || || || || || || || ||
MATLAB - ✔✔True || ||
Use of strings in MATLAB: - ✔✔- Output commands to display text messages
|| || || || || || || || || || || ||
- Formatting commands of plots
|| || || ||
- Input arguments of some functions
|| || || || ||
We can modify a string, by accessing one character or a set of characters within the original
|| || || || || || || || || || || || || || || || ||
string - ✔✔True || ||
Strings can't be stored in a matrix - ✔✔False
|| || || || || || || ||
Strings can also be stored in a matrix - ✔✔True
|| || || || || || || || ||
Built-infunction char: - ✔✔Info = char('Student Name:','John Smith','Grade:','A') || || || || || || ||
A string made up of the digits is the same as the number itself - ✔✔False
|| || || || || || || || || || || || || || ||
A string made up of the digits is different than the number itself - ✔✔True
|| || || || || || || || || || || || || ||
Each column of the table, called a _____ contains the same type of information - ✔✔field
|| || || || || || || || || || || || || || ||
Each row, called a _____, contains all the information about one entry in the table -
|| || || || || || || || || || || || || || || ||
✔✔record
Databases contain one or more related tables - ✔✔true || || || || || || || ||
EGR 1400 Exam 3 with precise detailed answers || || || || || || ||
A rectangular array of data - ✔✔Table
|| || || || || ||
a sequence of MATLAB commands also called
|| || || || || ||
program (also called M-files) - ✔✔script file || || || || || ||
Rules about variable names: - ✔✔- 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
|| || || || ||
a fundamental form that MATLAB uses to store and manipulate data - ✔✔Array
|| || || || || || || || || || || ||
a list of numbers arranged in rows and/or columns - ✔✔An array
|| || || || || || || || || || ||
In addition to arrays of numbers, arrays in MATLAB can be made of a list of - ✔✔characters
|| || || || || || || || || || || || || || || || ||
(strings)
||
Tables can be usually converted to arrays - ✔✔True
|| || || || || || || ||
In MATLAB a vector is created by assigning the elements of the vector to a variable -
|| || || || || || || || || || || || || || || || ||
✔✔True
,2
Creating a vector can be done in several ways: - ✔✔- By known list of numbers (row,
|| || || || || || || || || || || || || || || || ||
column) or functions || ||
- By specifying the first, the spacing, and the last term (with or without brackets, forward
|| || || || || || || || || || || || || || || ||
and backward) ||
- By specifying the first and last terms, and the number of terms (linspace command)
|| || || || || || || || || || || || || ||
The rule in creating a matrix is that some of the rows must have the same number of
|| || || || || || || || || || || || || || || || || ||
elements - ✔✔False || ||
Creating a matrix can be done in several ways: - ✔✔- 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)
|| || || || || || || || || || || || || ||
Not all variables in MATLAB are arrays - ✔✔False
|| || || || || || || ||
Using a colon to address a range of elements in vector or matrix - ✔✔• Vector:v(:);v(m:n)
|| || || || || || || || || || || || || || ||
• Matrix:A(:,n);A(n,:);A(:,m:n);A(m:n,:);A(m:n,p:q)
||
Adding an element which is beyond the size of a matrix, similar as in vector case, will result
|| || || || || || || || || || || || || || || || ||
in added zeros - ✔✔True
|| || || || ||
Built-in functions for handling arrays - ✔✔length(A), size(A), reshape(A, m, n), diag(v),
|| || || || || || || || || || || ||
diag(A)
an array of characters - ✔✔String
|| || || || ||
, 2
Strings use single quotes, and can include letters, digits, other symbols and space in
|| || || || || || || || || || || || || ||
MATLAB - ✔✔True || ||
Use of strings in MATLAB: - ✔✔- Output commands to display text messages
|| || || || || || || || || || || ||
- Formatting commands of plots
|| || || ||
- Input arguments of some functions
|| || || || ||
We can modify a string, by accessing one character or a set of characters within the original
|| || || || || || || || || || || || || || || || ||
string - ✔✔True || ||
Strings can't be stored in a matrix - ✔✔False
|| || || || || || || ||
Strings can also be stored in a matrix - ✔✔True
|| || || || || || || || ||
Built-infunction char: - ✔✔Info = char('Student Name:','John Smith','Grade:','A') || || || || || || ||
A string made up of the digits is the same as the number itself - ✔✔False
|| || || || || || || || || || || || || || ||
A string made up of the digits is different than the number itself - ✔✔True
|| || || || || || || || || || || || || ||
Each column of the table, called a _____ contains the same type of information - ✔✔field
|| || || || || || || || || || || || || || ||
Each row, called a _____, contains all the information about one entry in the table -
|| || || || || || || || || || || || || || || ||
✔✔record
Databases contain one or more related tables - ✔✔true || || || || || || || ||
