Mathematical Functions and Expressions set 4

Que.Which command is used to find the argument of a complex number?
a. atan2()
b. args()
c. abs()
d. cannot be determined
Discussion
Que.What is the class of the complex number?
a. double
b. symbolic
c. character
d. array
Discussion
Que.What is the argument of -1-i in MATLAB?
a. -3*pi/4
b. pi/4
c. 5*pi/4
d. -7*pi/4
Discussion
Que.What will be the output of the following code?
atan2(-1,1)

a. Error
b. -pi/4
c. -.7854
d. 0
Discussion
Que.The modulus of z, z conjugate and -z are not equal in MATLAB.
a. True
b. False
c. May be True or False
d. Can’t say
Discussion
Que.What will be the output of the following code?
z=2+3i/(i
Que.Which of the following command can be is used for complex arithmetic?
a. abs()
b. atan()
c. realc()
d. imagc()
Discussion


Que.What will be the output of the following code?
abs(i)

a. 1
b. -1
c. Error
d. i
Discussion


Que.What is a linear system?
a. A system which follows homogeneity and additivity
b. A system which follows additivity
c. A system which follows homogeneity
d. Almost every system is linear
Discussion


Que.What is the output if the following code?
if(eig(A)==eig(A’))
disp(‘True’)

a. True
b. No output
c. False
d. Error
Discussion


Que.A student has to find a solution for a system of equations having three variables. He has defined the coefficient matrix as C while the variable matrix as d. He observes that the system is homogeneous. So, to find the solution, he must first check
a. Consistency
b. Homogeneity
c. Heterogeneity
d. Linearity
Discussion