Question # 1

The projections of a line segment on x, y, z axes are 12, 4, 3. The length and the direction cosines of the line segment are

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The set { 1 , -1} is closed w.r.t.

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Addition

Multiplications

Subtraction

None of these

If the angle between two vectors u and v is 0 orπ, then the vectors u and v are:

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Orthogonal

Collinear

Perpendicular

None of these

Which is the proper rational function

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The minimum value of the quadratic function f(x) = 5 x 2-11,is

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7

-7

6

-11

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If distance of (a,b) from y-axis is 2 then

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a = 2

b = 2

a = b

a = 4

If f(x) = x³- 2x²+ 4x -1 then f(0) is

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0

1

-1

none of these

Sum of two quantities is at least 20 is denoted by

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x +y =20

x +y≥ 20

x +y≠ 20

x +y≤20

tan^-1x > cot^-1x holds for

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x > 1

x < 1

x = 1

All values of x

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0

1

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