Questions 11–20 of 87. Imported answers require independent review unless marked reviewed.

Topic practice 87 questionsPage 2 of 9

Question 13

Open question
PIMCQ1 markNeeds review
If

denotes the Laplace transform of some function

, then the Laplace transform of

, where

is a real constant, is
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Question 14

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Which one of the following equations is a linear differential equation?
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Question 15

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A bag contains 5 red, 7 green and 3 blue balls. Two balls are drawn at random from the bag one-by-one. The probability of the second drawn ball being red is
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Question 36

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PIMCQ2 marksNeeds review
The solution of the linear differential equation

when

, is
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Question 37

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Which one of the following functions is analytic, given

?
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Question 43

Open question
PINAT2 marksNeeds review
The value of the integral

obtained by using Simpson’s 1/3 rule with 4 subintervals is equal to

. The value of n is ________. (Answer in integer)

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Question 44

Open question
PINAT2 marksNeeds review
If i, j and k are the orthogonal unit vectors in Cartesian x-y-z coordinate system, the rate of change of the function

at point (1, 1, 1) in the direction of

is________. (Answer in integer)

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Question 58

Open question
PINAT2 marksNeeds review
The annual profit of a company depends on its annual marketing expenditure. The information of preceding 3 years’ annual profit and marketing expenditure is given in the table. Based on linear regression, the estimated profit (in units) of the 4

year at a marketing expenditure of 5 units is ________. (Rounded off to two decimal places)

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Question 11

Open question
PIMCQ1 markNeeds review
In the Taylor series expansion of

around

, the coefficient of the term

is
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Question 12

Open question
PIMCQ1 markNeeds review
A vector field is given as

, where

and

are the unit vectors along the x and y axes in the Cartesian frame, respectively. Then the value of

where

is an elemental path taken over an anticlockwise circular contour

of radius

is
Diagram for Production and Industrial Engineering question 12

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