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NAT I Engineering Mathematics MCQs With Answers

Question # 1

Area of ΔABC=

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ab sin α

1/2 ab sin α

1/2 ac Sin γ

1/2 ac Sin β

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Question # 2

If A and B are matrices such that AB=BA=I then

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A and B are multiplicative inverse of each other

A and B are additive inverses of each other

A and B are singular matrices

A and B are equal

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Question # 3

The common difference of the sequence 7,4,1......is

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-3

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Question # 4

1/x² -1 = ? (in case of making partial fraction)

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Ax +B/x² -1

A/x + B/ x- 1

A/ x+1 + B/x-1

None

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Question # 5

The angle a (0° < a< 180°) measured counterclockwise from positive x-axis to a non-horizontal straight line / is called the

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Rotation

Inclination

Radian

None

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Question # 6

The general solution of the differential equation dy/dx = log x is

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Y = -x log x- x +c

Y = x log x + x²

Y = x log x -x +c

Y= 2x log x + 2x +c

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Question # 7

In the figure PS is perpendicular to QR, if PQ = PR 26 and P8 = 24,then QR=

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Question # 8

If ab > 0 and a < 0, which of the following is negative?

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-b

-a

(a - b)²

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Question # 9

In the triangle Δ ABC, where C is the right angle Tan A + Tan B=

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A +B

C² /AB

A²/BC

B²/AC

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Question # 10

If a line passes through origin then the equation of the line is

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y = m/x

y = mx

x = my

None

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Question # 11

If A and B are matrices of same order than (A + B)(A + B)=

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addition

multiplication

subtraction

None

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