Question # 1

9. 8. 7. 6= ______

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The√ is used for the

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Positive square root

Negative square root

+ve and -ve square root

Whole number

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Every natural number is

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A prime number

An irrational number

An integer

An even number

The function f{(x, y) | y = ax²+ bx + c} is

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One-one function

Constant function

Onto function

Quadratic function

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Cos^-1 12/13 =

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tan^-1 3/5

cot^-1 13/12

Sec^-1 13/12

sin^-1 5/13

If a set S contains n elements then P (S) has ........ number of elements

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2ⁿ

2ⁿ²

2.n

n²

Period of cos x is _____

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A farmer possesses 100 hectometers of land and wants to grow corn and wheat. Cultivations of corn requires 3 hours per hectometer while cultivation of wheat requires 2 hours per hectometer. Working hours cannot exceed 240. If he gets a profit of Rs. 20 per hectometer for corn and Rs. 15 per hectometer for wheat. The profit function for the farmer is

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P(x, y) = 20x + 15y

P(x, y) = 2x + 3y

P(x, y) = x + y

P(x, y) = 3x + 2y

An open sentences formed by using the sign of equality '=' is called ______

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An identity

An equation

A polynomial

None of these

tanθ/2

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x = r2, y = 1 are the parametric equation of

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Circle

Hyperbola

Ellipse

Parabola

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Associative law of addition

Commutative law of addition

Additive identity

Closure law of addition

The matrix A = [aij]1xn is a

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Vector

Rectangular matrix

Column vector

Square matrix

The angle of elevation of a tower from a point A due south of it is x and from a point B due east of A is y. If AB = 1, then the height h of the tower is given by