Question # 1

If the vector 2i+4j-2k and 2i +6j+xk are perpendicular then x-7

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4

8

14

7

Every prime number is also

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Rational number

even number

Irrational number

multiple of two numbers

For which of the following ordered pairs (s,t) is s + t> and s- t < -3?

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(3,2)

(2,3)

(1,8)

(0,3)

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

F(x) = xx decreases in the interval

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(0,e)

(0.1)

(-∞.0)

None

d/dx (3y⁴) =

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12y³ dy/dx

8y³

8y³ dy/dx

12y³

In general matrices do not satisfy

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Not a group

A group w.r.t. subtraction

A group w.r.t. division

A group w.r.t. multiplication

Sin-1 (√2/2)=?

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π/2

π/3

3π/4

2π

The number of real roots in cube roots of 8 is ?

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n x m

m x n

km x n

m x kn

If i,m,n are the direction cosines of a vector O̅P̅ then

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I² + m² + n² =0

I² - m² + n² =1

I² + m² + n² =1

I² + m² - n² =0

Tan (π + Tan^-1 x) =?

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Tan x

X

-x

Cot^-1 x

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NAT I Engineering Mathematics MCQs With Answers

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