Mathematical Functions and Expressions set 6

Que.To check the rank of a non-singular square matrix, we have to use ___________
a. not required
b. rankm()
c. rankmatr()
d. rank()
Discussion
Que.A student aims to use Cramer’s rule to find a solution for a homogeneous system. But while finding the solution, he observes that he is getting infinity as a solution. The code isp=X.\CX is the matrix created by replacing a column with constant co-efficients in the equation.C is the co-efficient matrixP is one of the variables in the systemIs this a proper justification?
a. Yes
b. No
c. Maybe
d. It is not possible to find solutions in MATLAB
Discussion
Que.Which rule does MATLAB use while differentiating a set of functions?
a. u-v rule
b. by parts
c. no pre-defined rule
d. not possible
Discussion
Que.There is no difference between a difference equation and a differential equation.
a. True
b. False
c. May be True or False
d. Can’t say
Discussion
Que.For the existence of the n
Que.What is the data type of y?
y=diff(x²*cos(x) + 2*x*sin(x))

a. Symbolic
b. Double
c. Array
d. Symbolic Array
Discussion
Que.The output for diff(p²,q) is _______
a. 0
b. 2*p
c. 2 dp/dq
d. Error
Discussion
Que.What does the following code do?
syms m,y,x,c;
y=mx+c;
diff(y)

a. Calculate m
b. Calculate slope
c. Error
d. Calculate divergence
Discussion
Que.What is the nature of ode45 solver?
a. 2nd ordered R-K solver
b. 4th ordered R-K solver
c. 1st order R-K solver
d. Adams solver
Discussion
Que.Ordinary differential equations having initial values ____________
a. Can be solved
b. Cannot be solved
c. Can be modelled
d. Has a trivial solution
Discussion
Que.The current characteristics of RC networks are better analyzed by Laplace than differentiation methods.
a. True
b. False
c. May be True or False
d. Can’t say
Discussion