Question

Questions 32-34 Are based on the following vectors: A 4 5 6 7 8 9 10 C 12 4 6 8 10 12 14 D 0 0 0 0 0 0 0)]

Answer 1

Given vectors are:

A=[4,5,6,7,8,9,10]

B=[1,1,1,1,1,1,1]
C=[2,4,6,8,10,12,14]

D=[0,0,0,0,0,0,0]

Declare the vectors A,B,C and D in Matlab as shown below:

>A-[4,5, 6, 7,8,9,10] 4 5 6 78 9 10 > C [2,4, 6,8,10,12,14] 2 4 6 8 10 12 14 >D [0,0,0,0,0,0,0] O 0 O 0 0 0 0

For Q.No:32

Answer is : X=[A;B;C;D]

4 5 6 7 8 9 10 C [2,4,6,8,10,12,14] 2 4 6 8 10 12 14 > D= [0, 0, 0, 0, 0, 0, 0] 4 5 6 7 8 9 10 2 4 6 8 10 12 14

Explanation:

In order to merge the given single dimensional vectors A,B,C,D into X (two dimensional vector) we use X=[A;B;C;D]

For creating a new row in a vector, we use a semicolon (;)

since A,B,C and D are single row vectors, by using command X=[A;B;C;D] will insert each of the vector's member elements into a separate row.

for eg: S=[1,2;3,4] will produce a vector a with two rows in which first row will have 1 , 2 and second row will have 3,4

1 2 3 4

For Q.No. 33

Answer is (d):All of the Above

we can clearly observe that the elements in resulting vector Y is having elements of each of the vectors A,B,C and D are inserted into Y arranged in columns.

4 5678910 B= C= 2468 10 |12 14 D=

So,In order to get the desired result Y , we need to specify the command IN THREE POSSIBILE WAYS:

ㄚ A= | 4 | 5 | 6 | 7 | 8 | 9 | 10 C 2 4 6 8 10 12 | 14 10 12 14 10

• Y=[A'B'C'D']

This command transposes elements of each of the vector and puts them into resulting vector

• Y=[A;B;C;D]'

This command puts all the vectors as rows and transposes them into columns

• Y=[A',B',C',D']

This command just works like a first one

> Y= [A,B,C,D,] 5 1 0 7 1 8 0 8 1 10 0 9 1 12 0 10 1 14 0

Y= 5 1 0 7 1 8 0 8 1 10 0 9 1 12 0 10 1 14 0 5 1 0 7 1 8 0 8 1 10 0 9 1 12 0 10 1 14 0

For Q.No:34

Answer is : (e): all of the above

Explanation:

Vector A is having the elements 4,5,6,7,8,9,10 we can clearly see the sequential pattern of consecutive numbers from 4 to 10

This can be achieved in three ways:

Method 1: Specifying a range with default distance "1" A-4:10 en Method 2:Specifying a series of elements with distance "1" ane Method 3:Specifying a linearly spaced vector with number of elements 7 A linspace (4,10,7) nb

Answer key:

32- b

33- d

34- e