MATLAB EXTRA 1

What will be the output of the code all

([1 0 1 0])?

0

What is the output of the code 2 * 0 ^ 0 + 9?

11

What will be the output of the code Inf (74 & sin(nan))?

error

What will be the output of the code all([NaN])?

error

What will be the output of the code xor(3476, 1234)?

1

What will be the output of the code any(sin(0), NaN)?

1

What will be the output of the code all(sin([pi]))?

1

The correct hierarchy of operation is:

>>=&1

Predominantly, what are the two kinds of errors in MATLAB programs?

syntax and runtime

Which code would you use to find the value of the function f(x) = sin(x) + cos(x) + tan(x) at x = 1?

sin(45) + cos(d45) + tand(45)

What command in MATLAB is used to create new variable?

var

The num2str command means

converts a number to string

To display ‘Question 2’ in command window, the correct command is

disp (‘Question 2’)

To add comment to the mfile, the MATLAB command

%

What is the name of a primary function?

Name of M.file

What are persistent variables?

variables which retain values between calls to the function

Which command can be used for single step execution in debugging mode?

dbstep

How do we access a global variable in nested functions?

declare the variable as global

How does MATLAB help in passing function arguments?

by call by value and call by reference

What is the default variable while evaluating transfer function?

s

What is the default variable while evaluating Laplace transform?

s.

The output of the following code is
laplace(exp(-3*p))

error due to p

The output of the following code is
solve('w+z=0')

-z

The default variable in case of solve (‘f(x,y,p,a,l)’ ) command is

x

What is the default parameter for dsolve() command

input differentiating variable

What is the default parameter for the ‘ztrans()’ command

z

What is the output of the following code? syms x; laplace(exp(-3x),x,y)

error

Matlab allows modeling of different control systems using

simulink

How to stop the execution of a chain of commands

press ctrl + c

What are MEX files in MATLAB?

Allows the user to combine C source files with MATLAB

How would you plot multiple graphs in MATLAB?

using the held function

How do you show the program of a MAT file

the program cannot be shown while running a MEX file

What is the equipment of subplot (1,1,1)?

axes

The command used to reflect film from disk into the workspace is

load

The format for 5 digit representation along with exponent is

short -e

Which operator in c used to prevent the printing of insignificant terms?

%g

The function to plot a graph with both axes logarithmic scale is

loglog

We can plot a discrete and continuous relationship in the same graph

false

it not possible to store graph as MAT file

How do we break from an infinite loop without keeping a break statement within the loop?

press Ctrl + C

The nature of complex input taken by the sparse() command is

sparse

What is the attribute of sparse matrix?

imaginary & real part

which of the following can be the space taken up by sparse matrix

25 MB

A sparse identity matrix is generated by which command?

speye

Which command is used to generate a sparse normally generated matrix?

sprandn

What is the output of the following code?

The non-zero elements in sparse matrix are shown by which command?

What is the output of the following code?
A = [0 Inf Inf 0 0; 2 9 7 0; sin (Inf) 8 0 0];
P = sparse (A); nnz (P)

Imemory > amemory

The size of the sparse matrix will be ____ the original matrix.

equal

The maximum space allocated for sparse matrix is given by which command?

nzmax

Which matrix has most of the elements (not all) as zero.

sparse matrix

What is the relation between Sparsity and Density of a matrix?

Sparsity = 1 - Density

Who coined the term Sparse Matrix?

Harry Markowitz

The matrix contains in rows and n columns. The matrix is called Sparse matrix if

Total No. of Zero elements > (m*n)/z

Which of the following is not the method to represent Sparse matrix?

heap

Is Sparse matrix also known as Dense matrix?

false

Which one of the following is a Special Sparse matrix?

band matrix

in what way the Symmetry Sparse matrix can be stored efficiently?

binary tree

The output of the following command is

a = [123; 400; 309]; spy(A)

Executing in the command window the following code returns
a = [1:3]; size(a)

3 1

Command used to save command window text to file

diary

Executing in the editor window the following code returns
a = 1; sin(a)

0.8415

Which is invalid variable name in MATLAB?

6x

Command used to display the value of variable x

disp(x)

What command is used to clear a command window

clc