Question # 1

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

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X=2, y=-1

X=-2, y=1

X=2, y=-i

X=2, y=2

If x < y, 2x = A and 2y = B then

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A =B

A < B

A< X

B < y

The mid point of the line joining (=1,-3) to(3,-5) is

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(1, 1)

(1,-1)

(2, -8)

(1, -4)

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

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addition

multiplication

subtraction

None

Cos^-1 (-x) =_______.

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π +cos^-1 x

π -sin^-1 x

π +sin^-1 x

π -cos^-1 x

If sinθ = 1 then θ =

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2nπ +π/2

2nπ

2π +n

Nπ +π/2

Which is not a half plane

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ax + by < c

ax + by > c

Both A and B

None

Sin^-1 x =?

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π/2- Sin^-1 x

π/2 -Cos^-1 x

-Sin^-1 x

-Cos^-1 x

Unit vector in the positive direction of x-axis is

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î

ĵ

k̂

All

The set of the first elements of the ordered pairs forming a relation is called its

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-x

does not exist

1/x

0

d/dx a^x is

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xa^x-1

a^x

x in a

a^x in a

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NAT I General Science Mathematics MCQs With Answers

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