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NAT I Engineering Mathematics MCQs With Answers

Question # 1

d/dx ∫x¹ dx =________.

Choose an answer

1/4 x⁴

X³

3x³

x⁴/4

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Question # 2

The number of ways in which we can courier 5 packets to 10 cities is

Choose an answer

2 x 5^o

5¹⁰

10⁵

2¹⁰

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Question # 3

The set (Z, +) forms a group

Choose an answer

Function on B

Range

Domain

A into B

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Question # 4

If A = [a_ij] and b = [b_ij] are the matrices of the order 3x3 then A-B=

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Circle

Ellipse

Parabola

Hexagon

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Question # 5

Which is not included in the domain of Cos^-1 x

Choose an answer

-1

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Question # 6

Any point where f is neither increasing nor decreasing and f(x) =0 at that point is called a

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Minimum

Maximum

Stationary point

Constant

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Question # 7

The value of x, and y, when (x+iy)²=5+4i

Choose an answer

X=2, y=-1

X=-2, y=1

X=2, y=-i

X=2, y=2

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Question # 8

If a rectangle has an area 81x² and length of 27x. then what is its width?

Choose an answer

3x²

9x²

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Question # 9

Sin x + Cos x=1 x=

Choose an answer

π/2

π/3

π/4

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Question # 10

If α and β be irrational roots of a quadratic equation, then

Choose an answer

α = b/a and β = ca

α = a/b and β = -c/a

α² + β² = 1

α = -b/a and β= c/a

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Question # 11

If f (x) = x/x²- 4 then which is not included in the domain of f(x)

Choose an answer

-2

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