MATLAB Basics- Multiple Choice Questions

Que.What would be the output of the following code (in editor window)?
A = [0 1; 1 0]	;	B=2	;	C = A + B

a. 1 24 5
b. 2 33 2
c. 3 23 2
d. 3 22 3
Discussion
Que.What would be the output of the following code (in editor window)?
A = [1 0 2]	;	b = [3 0 7]	;	c=a.*b;

a. [2 0 21]
b. [3 0 14]
c. [14 0 3]
d. [7 0 3]
Discussion
Que.What would be the output of the following code (in editor window)?
a=1:5	;	c=a.^2

a. [1 25]
b. [1 2 3 4 5]
c. [25 16 9 4 1]
d. [1 4 9 16 25]
Discussion
Que.What would be the output of the following code (in editor window)?
A = [1	1	0	0]
B = [1	;2	;3	;4]
C=A*B

a. 0
b. [1 0 0 0]
c. 3
d. [1 2 0 0]
Discussion
Que.What would be the output of the following code (in editor window)?
A = [1	2;	3	4]
C = A^2

a. [7 10; 15 22]
b. [1 4; 9 16]
c. [16 9; 4 1]
d. [22 15; 10 7]
Discussion
Que.What would be the output of the following code (in editor window)?
A=1:5;
B=cumprod(A)

a. b=[1 2 6 24 120]
b. b=[1 2 3 4 5]
c. b=[5 4 3 2 1]
d. b=[120 24 6 2 1]
Discussion
Que.Create an array of logical values.A = [true false true; true true false]A = 1 0 11 1 0B = cumprod(A,2)Find the cumulative product of the rows of A.
a. B = 1 0 00 1 0
b. B = 1 0 01 1 0
c. B = 1 0 01 1 1
d. B = 1 1 01 1 0
Discussion
Que.Find the cumulative sum of the columns of A.
  A =1     4     7
        2     5     8
        3     6     9
B = cumsum(A)

a. B = 1 4 73 8 156 15 24
b. B = 1 4 74 9 154 15 24
c. B = 1 4 73 9 156 15 29
d. B = 1 4 73 9 156 15 24
Discussion
Que.Create a 4-by-2-by-3 array of ones and compute the sum along the third dimension.
A = ones(4,2,3);
S = sum(A,3)

a. S = 3 33 33 33 3
b. S = 3 43 43 43 4
c. S = 2 32 32 32 3
d. S = 7 35 36 33 3
Discussion
Que.Round each value in a duration array to the nearest number of seconds greater than or equal to that value.
t = hours(8) + minutes(29:31) + seconds(1.23);
t.Format = 'hh:mm:ss.SS'
t = 08:29:01.23   08:30:01.23   08:31:01.23
Y1 = ceil(t)
Y2 = ceil(t,'hours')

a. Y1 = 08:29:02.00 08:30:02.00 08:31:02.00Y2 = 09:00:00.00 09:00:00.00 09:00:00.00
b. Y1 = 08:29:02.00 08:30:02.00 08:31:02.00Y2 = 08:29:01.23 08:30:01.23 08:31:01.23
c. Y1 = 08:29:01.23 08:30:01.23 08:31:01.23Y2 = 08:29:01.23 08:30:01.23 08:31:01.23
d. Y1 = 008:29:01.23 08:30:01.23 08:31:01.23Y2 = 09:00:00.00 09:00:00.00 09:00:00.00
Discussion