Question # 1

An equation which holds good for all values of variables is called

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Equation

Conditional equation

Constant

None

If f (x) is defined and continuous then f (x) is always

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Rational function

Trigonometric function

Logarithmic function

All are correct

There are two middle terms in the expansion of (a+x)n if n is

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Even +ve integer

+ve integer

Odd +ve integer

All

The direction cosines of a line equally inclined with co-ordinate axes are

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The distance between the points (2, 2) and (3, 3) is

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10

5

2

tan(2π+θ) = ________;

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tanθ

-tanθ

cotθ

-cotθ

The law of sines is

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The set {Z\ {0} } is group w.r.t

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Addition

Multiplication

Division

Subtraction

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cos x

sec x tan x

sec²x

-cosec²x

The maximum value of the quadratic function f(x) = -2x2+20x,is

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4

3

50

7

A square matrix A = [aij] is lower triangular matrix when:

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aij = 0 for all i < j

bij = 0

cij = 0

dij =0

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