Mathematical Functions and Expressions set 22

Que.What is the output of the following code?
A=[0 0 0; 0 9 0; 1 2 3]; nnz[A]

a. 4
b. 5
c. 3
d. Error
Que.What is the output of the following code?
A=[1 2 3; 32 23 26; 0 0 0]; spones(A)

a. Returns a sparse matrix with the non-zeros replaced by normally distributed random numbers
b. Returns a sparse matrix with the zeros replaced by ones
c. Returns a sparse matrix with the non-zeros replaced by fractions
d. Returns a sparse matrix with the non-zeros replaced by random numbers
Que.The space located for the matrix generated from the spones command is _______
a. Same as a sparse matrix
b. Same as the original matrix
c. Same as an identity matrix
d. Double that of the sparse matrix
Que.What is the output of the following code?
A=[1 2 3; 4 5 6; 7 8 9];if( nzmax(A)==nzmax(spones(A) ) disp(‘Yeah !’)

a. No output
b. Error
c. Yeah !
d. Output suppressed
Que.What is the output of the following code?
nnz(spconvert([1 2 3; 4 5 6; 7 8 9])

a. 3
b. 2
c. 1
d. 6
Que.What is the output of the following code?
nzmax(spconvert([1 2 3; 4 5 6; 7 8 9])

a. 2
b. 3
c. 1
d. Error
Que.A memory for sparse matrix is dedicated by the ______ command.
a. spalloc
b. sparsealloc
c. allocspar
d. no such command
Que.What is the output of the following command?
spalloc(2,3, 7)

a. A 2*3 sparse matrix
b. Memory is allocated for a 2*3 sparse matrix
c. A 3*2 sparse matrix
d. Error
Que.The default number of non-zero elements which can be put into the memory allocated by the spalloc command is > 1.
a. True
b. False
c. May be True or False
d. Can’t say
Que.The pattern generated by the spy command is a measure of the number of zeros in the input matrix.
a. True
b. False
c. May be True or False
d. Can’t say