CMPSC 200 Practice Exam Questions With Correct Answers

CMPSC 200 Practice Exam Questions With
Correct Answers

What does MATLAB stand for? - CORRECT ANSWER✔✔-Matrix Laboratory
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What numeric value would be produced by this calculation in MATLAB? 5-2/4^2
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a) 4.875
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b) 4.75
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c) 5.125
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d) This calculation would produce a syntax error - CORRECT ANSWER✔✔-a) 4.875
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Which of the following is not a valid variable name in MATLAB?
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a) 38special
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b) B52s
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c) Blink_182
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d) U2 - CORRECT ANSWER✔✔-a) 38special
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- a valid variable name must start with a letter followed be letters, digits, or
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underscores


What is the value of z at the end of a run of this code fragment?
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cos = @(y) sin(y)
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z = cos(0)
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,a) 1 | |




b) 0 (or something numerically equal to zero)
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c) -1| |




d) This code fragment will not run due to a syntax error - CORRECT ANSWER✔✔-
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b) 0 (or something numerically equal to zero)
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Picture a figure containing 18 subplots, arranged as if they had 3 rows and 6
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columns. Which subplot command is associated with operations for the plot in
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the 2nd row, 4th column?
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a) subplot(3,6,11)
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b) subplot(3,6,10)
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c) subplot(6,3,10)
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d) subplot(6,3,11) - CORRECT ANSWER✔✔-b) subplot(3,6,10)
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Which of the following is a valid function header in MATLAB?
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a) function y, z = f[x]
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b) function = f(x) y,z
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c) y,z = f(x)
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d) function [y,z] = f(x) - CORRECT ANSWER✔✔-d) function [y,z] = f(x)
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Consider the following code fragment: | | | | |




x = exp(0)
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x=x+1
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When one runs the code, what is the value of x at the end of a run of this code?
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, a) 2 | |




b) 1 | |




c) 0 | |




d) This code fragment will not run due to a syntax error - CORRECT ANSWER✔✔-
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a) 2 |




Which command rounds an arbitrary variable y to the nearest integer towards
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positive infinity? |




a) floor(y)
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b) ceil(y)
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c) fix(y)
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d) round(y) - CORRECT ANSWER✔✔-b) ceil(y)
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If a person wants to print an character string using the fprintf command, the
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necessary type field could be | | | |




a) %s| |




b) %c| |




c) %d| |




d) %i - CORRECT ANSWER✔✔-a) %s
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Which of these is a built-in function in MATLAB?
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a) NaN
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b) pi| |




c) size
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