MATLAB Practice Test 5

1. The limits of the axes drawn are only specified in the command used to plot the graph itself.

True

False

2. What is the output of the following command?

randi(10 5,3)

Error

A 5*3 matrix of random numbers in the interval [1,10]

A 583 matrix of random numbers evenly spaced in the interval [1,10]

A 5*3 matrix of random numbers

3. The output of the following code

randn[(3,4)]

A random set of numbers from the normal distribution ranging from 3 to 4

A random set of numbers from the range 3,4

Error

A random set of numbers from the normalized normal distribution

4. How many objects are created for 24 texts written in the graph?

5. What is the output of the following code?

rand(2,’signed’)

Error

A 2 element vector

A 2*2 matrix of signed data type

A 2 element vector of signed data type

6. What is the period of square wave generated by the square() command?

2*pi

pi/2

User-defined

7. What is the output of the following command?

spalloc(2,3, 7)

Error

A 2*3 sparse matrix

A 3*2 sparse matrix

Memory is allocated for a 2*3 sparse matrix

8. A memory for sparse matrix is dedicated by the ______ command.

allocspar

no such command

sparsealloc

spalloc

9. What is the nature of z in surf(x,y,z)?

Vector

Integer

String

Matrix

10. What is the purpose of the figure command?

Opens a window containing axes

Opens a blank window to draw graphs

Opens a blank window

Opens a window containing grid and axes