Questions 491–500 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 50 of 65

Question 26

Open question
MAMCQ2 marksNeeds review
For the linear programming problem (LPP):

(

is the set of all real numbers)
consider the following statements:
I. The LPP always has a finite optimal value for any

.
II. The dual of the LPP may be infeasible for some

.
III. If for some

, the point

is feasible to the dual of the LPP, then

, for any feasible solution

of the LPP.
IV. If for some

,

and

are the basic variables in the optimal table of the LPP with

, then the optimal value of dual of the LPP is 10.
Then which of the above statements are TRUE?
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Question 27

Open question
MAMCQ2 marksNeeds review
Let

be defined by

Consider the following statements:
I. The partial derivatives

exist at

but are unbounded in any neighbourhood of

.
II.

is continuous but not differentiable at

.
III.

is not continuous at

.
IV.

is differentiable at

.
(

is the set of all real numbers and

)
Which of the above statements is/are TRUE?
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Question 28

Open question
MAMCQ2 marksNeeds review
Let

be an infinite matrix over

(the set of all complex numbers) such that
(i) for each

(the set of all natural numbers), the

row

of

is in

and
(ii) for every

,

is summable for all

, and

, where

.
Let the set of all rows of

be denoted by

. Consider the following statements:
P:

is a bounded set in

.
Q:

is a dense set in

.

Which of the above statements is/are TRUE?
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Question 29

Open question
MAMCQ2 marksNeeds review
Consider the following heat conduction problem for a finite rod

with the boundary conditions

,

,

and the initial condition

,

. If

, then which one of the following is CORRECT?
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Question 30

Open question
MAMCQ2 marksNeeds review
Let

be non-zero and analytic at all points in

. If

for

, then the residue of

at

is _____.
(

is the set of all complex numbers,

is the set of all integers and

denotes the set of all complex numbers excluding integers)
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Question 31

Open question
MAMCQ2 marksNeeds review
The general integral of the partial differential equation

is given by

, where

is a continuously differentiable function.
(

is the set of all real numbers and

)
Then which one of the following is TRUE?
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Question 32

Open question
MAMCQ2 marksNeeds review
Consider the following statements:
I. If

denotes the additive group of rational numbers and

is a non-trivial homomorphism, then

is an isomorphism.
II. Any quotient group of a cyclic group is cyclic.
III. If every subgroup of a group

is a normal subgroup, then

is abelian.
IV. Every group of order 33 is cyclic.
Which of the above statements are TRUE?
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Question 33

Open question
MAMCQ2 marksNeeds review
A solution of the Dirichlet problem

is given by
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Question 34

Open question
MAMCQ2 marksNeeds review
Consider the subspace

of the normed linear space

. If

is a bounded linear functional on

, defined by

, then which one of the following sets is equal to

(

is the set of all complex numbers,

and

)
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Question 35

Open question
MAMCQ2 marksNeeds review
Consider the following statements:
I. The ring

is a unique factorization domain.
II. The ring

is a principal ideal domain.
III. In the polynomial ring

, the ideal generated by

is a maximal ideal.
IV. In the polynomial ring

, the ideal generated by

is a prime ideal.
(

denotes the set of all integers,

denotes the set of all integers modulo

, for any positive integer

)
Which of the above statements are TRUE?
Your answerChoose one option.

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