CMPSC 200 Practice Exam Question and
answer correctly solved
What does MATLAB stand for? - correct answer ✔Matrix Laboratory
What numeric value would be produced by this calculation in MATLAB? 5-
2/4^2
a) 4.875
b) 4.75
c) 5.125
d) This calculation would produce a syntax error - correct answer ✔a) 4.875
Which of the following is not a valid variable name in MATLAB?
a) 38special
b) B52s
c) Blink_182
d) U2 - correct answer ✔a) 38special
- a valid variable name must start with a letter followed be letters, digits, or
underscores
What is the value of z at the end of a run of this code fragment?
cos = @(y) sin(y)
z = cos(0)
a) 1
b) 0 (or something numerically equal to zero)
c) -1
,d) This code fragment will not run due to a syntax error - correct answer ✔b)
0 (or something numerically equal to zero)
Picture a figure containing 18 subplots, arranged as if they had 3 rows and 6
columns. Which subplot command is associated with operations for the plot in
the 2nd row, 4th column?
a) subplot(3,6,11)
b) subplot(3,6,10)
c) subplot(6,3,10)
d) subplot(6,3,11) - correct answer ✔b) subplot(3,6,10)
Which of the following is a valid function header in MATLAB?
a) function y, z = f[x]
b) function = f(x) y,z
c) y,z = f(x)
d) function [y,z] = f(x) - correct answer ✔d) function [y,z] = f(x)
Consider the following code fragment:
x = exp(0)
x=x+1
When one runs the code, what is the value of x at the end of a run of this
code?
a) 2
b) 1
c) 0
d) This code fragment will not run due to a syntax error - correct answer ✔a)
2
, Which command rounds an arbitrary variable y to the nearest integer towards
positive infinity?
a) floor(y)
b) ceil(y)
c) fix(y)
d) round(y) - correct answer ✔b) ceil(y)
If a person wants to print an character string using the fprintf command, the
necessary type field could be
a) %s
b) %c
c) %d
d) %i - correct answer ✔a) %s
Which of these is a built-in function in MATLAB?
a) NaN
b) pi
c) size
d) j - correct answer ✔NaN
Which of these commands deletes information from the workspace?
a) clc
b) close
c) clear
d) clf - correct answer ✔clear
What result would you anticipate after running the command nargin('nthroot')?
answer correctly solved
What does MATLAB stand for? - correct answer ✔Matrix Laboratory
What numeric value would be produced by this calculation in MATLAB? 5-
2/4^2
a) 4.875
b) 4.75
c) 5.125
d) This calculation would produce a syntax error - correct answer ✔a) 4.875
Which of the following is not a valid variable name in MATLAB?
a) 38special
b) B52s
c) Blink_182
d) U2 - correct answer ✔a) 38special
- a valid variable name must start with a letter followed be letters, digits, or
underscores
What is the value of z at the end of a run of this code fragment?
cos = @(y) sin(y)
z = cos(0)
a) 1
b) 0 (or something numerically equal to zero)
c) -1
,d) This code fragment will not run due to a syntax error - correct answer ✔b)
0 (or something numerically equal to zero)
Picture a figure containing 18 subplots, arranged as if they had 3 rows and 6
columns. Which subplot command is associated with operations for the plot in
the 2nd row, 4th column?
a) subplot(3,6,11)
b) subplot(3,6,10)
c) subplot(6,3,10)
d) subplot(6,3,11) - correct answer ✔b) subplot(3,6,10)
Which of the following is a valid function header in MATLAB?
a) function y, z = f[x]
b) function = f(x) y,z
c) y,z = f(x)
d) function [y,z] = f(x) - correct answer ✔d) function [y,z] = f(x)
Consider the following code fragment:
x = exp(0)
x=x+1
When one runs the code, what is the value of x at the end of a run of this
code?
a) 2
b) 1
c) 0
d) This code fragment will not run due to a syntax error - correct answer ✔a)
2
, Which command rounds an arbitrary variable y to the nearest integer towards
positive infinity?
a) floor(y)
b) ceil(y)
c) fix(y)
d) round(y) - correct answer ✔b) ceil(y)
If a person wants to print an character string using the fprintf command, the
necessary type field could be
a) %s
b) %c
c) %d
d) %i - correct answer ✔a) %s
Which of these is a built-in function in MATLAB?
a) NaN
b) pi
c) size
d) j - correct answer ✔NaN
Which of these commands deletes information from the workspace?
a) clc
b) close
c) clear
d) clf - correct answer ✔clear
What result would you anticipate after running the command nargin('nthroot')?
