Question # 1

If any two rows (or any two columns) of a square matrix are inter changed, the determinant of the resultant matrix is

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Same as the original determinant

Additive inverse of the original determinant

Both A and B

Adj of the original matrix

The value of the polynomial 3x³+ 4x²- 5x + 4 at x = -1 is

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12

1

10

-10

If f₁(x) and f₂(x) are any two anti derivatives of a function F (x), then the value of f₁(x) - f₂(x) =

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A variable

A constant

undefined

infinity

The curves y = x², y = x intersect at

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(0,0) , (1, 1)

(2, 4)

(0,3), (-1, 1)

Sin(a + b) + Sin (a - b) =

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Sin a Cos b

Sin a Sin b

Sin a + Cos b

Sin a - 2 Cos b

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The multiplicative inverse of x such that x = 0 is

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-x

does not exist

1/x

0

Which of the vectors have opposite direction?

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Both A and B

The number of diagonals of a six sided figure are

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9

6

12

3

What is the period of Cot x?

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If the angle of a triangle are in the ratio 2:3:7, the triangle is

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Obtuse

Acute

Right angle

Isosceles

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