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Aasma March 22 2022

The slope of the normal to the curve x² + 3y + y² at (1, 1) is ?

a) 5/2

b) –5/2

c) –2/5

d) 2/5

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Aasma March 22 2022

Find the local maxima or minima of the function: f(x) = sin x + cos x, where 0 < x < 90

a) 2π/3

b) π/2

c) 3π/4

d) π/4

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Aasma March 22 2022

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Aasma March 22 2022

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Aasma March 22 2022

The total revenue received from the sale of x units of a product is given by R(x) = 7x² + 14x + 10

What is the marginal revenue when x = 10 units ?

a) 140

b) 28

c) 154

d) 64

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Aasma March 22 2022

Differentiation of logx.sinx ?

a) (sinx)⋅(1/x)

b) (sinx)⋅(1/x) + (logx)⋅(cosx)

c) (cosx)⋅(sinx) + logx

d) (cosx)⋅(-1/x) + 1/logx

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Viraj March 21 2022

In an exam, the average was found to be 60 marks. After it was found that marks of 10 candidates were wrongly written 50 in place of 70 and after correction the average became 65. What is the total number of candidates who took the exam ? a) 45 b) 40 c) 35 d) 30

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Kanishka March 21 2022

If each element of a matrix of order 3 × 3 has determinant of value A. If each element of this matrix is multiplied by 2, then the determinant of the new matrix is equal to ? a) A b) 3A c) 8A d) 9A

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Kanishka March 21 2022

The length of shadow of a vertical pole on the horizontal ground is times of its height, then the angle of elevation of the sun is ? a) 15º b) 30º c) 45º d) 60º

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