Questions 41–50 of 65. Imported answers require independent review unless marked reviewed.

Topic practice 65 questionsPage 5 of 7

Question 41

Open question
MAMCQ2 marksNeeds review
Let

and

be two linearly independent solutions of the ordinary differential equation

Let

be such that

,

and

for all

. Consider the following statements:

:

.

:

for all

.
Then
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Question 42

Open question
MAMSQ2 marksNeeds review
Let

and

be an analytic function given by the power series

, where

and

for

. Consider the following statements:

: If

, then

is one-one in some neighbourhood of

.

: If

, then

is a closed subset of

.
Which of the following statements is/are correct?
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Question 43

Open question
MAMSQ2 marksNeeds review
Let

be an open connected subset of

containing

. Let

. Consider the following statements:

: There exists

such that

.

:

for all

, where

denotes the third derivative of

.
Then
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Question 44

Open question
MAMSQ2 marksNeeds review
Let

be a topological space, where the topology

is defined as

Which of the following statements is/are correct?
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Question 45

Open question
MAMSQ2 marksNeeds review
Let

, where

denotes the set of rational numbers and

denotes the set of integers. For

, let

denote the ideal generated by

in

.
Which of the following statements is/are correct?
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Question 46

Open question
MAMSQ2 marksNeeds review
Consider the rings

where

denotes the ideal generated by

in

and

denotes the ideal generated by

in

.
Which of the following statements is/are correct?
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Question 47

Open question
MAMSQ2 marksNeeds review
Consider the sequence of Lebesgue measurable functions

given by

For a measurable subset

of

, denote

to be the Lebesgue measure of

.
Which of the following statements is/are correct?
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Question 48

Open question
MAMSQ2 marksNeeds review
Define the characteristic function

of a subset

in

by

For

, let

Let

be defined by

Consider the following two statements:

:

for every

.

:

.
Then
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Question 49

Open question
MAMSQ2 marksNeeds review
Let

,

,

, be two functions satisfying the following system of differential equations:

and

,

, where

are real numbers.
Which of the following statements is/are correct?
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Question 50

Open question
MAMSQ2 marksNeeds review
For

, and

, let

be a three-point formula to approximate

for any differentiable function

and

.
If

for every polynomial

of degree less than or equal to 2 and for all

, then
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