Question # 1

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The 5th term of (3a-2b)^-1is

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77b²/a⁵

16b²/243 a⁵

17b⁴/43a⁵

25b³/43a⁵

The multiplicative inverse of 1 is

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1

-1

0

Does not exist

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The eccentricity of the conic 9x²- 16y²= 144 is

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4/5

5/4

4/3

3/4

The domain of the principle cos function is

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A function F(x) is called even if

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F(x) = F (-x)

F(x) = F(-x)

F(x) = -F(x)

2F(x) = 0

The domain of y =√(x^2-9) is

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R

(0 , +∞)

(-∞ , -3 )∪ (3 , +∞)

(0 ,∞)

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A = x, B = 1

A = 0, B = 2

A = -1, B = 1

A = x-1, B = x + 1

For a square matrix A, if A = At, then A is called

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Matrix

Transpose

Symmetric

Non-symmetric

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

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a = 2

b = 2

a = b

b = 4

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0

1

-2

10

The upper 3/4 the portion of a vertical pole subtends an angle tan^-13/5 at a point in the horizontal plane through its foot and at a distance 40 m from the foot. A possible height of the vertical pole is

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20 m

40 m

60 m

80 m

The direction cosines of any normal to the xy-plane are

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<1, 0, 0>

<0, 1, 0>

<1, 1, 0>

<0, 0, 1>

The area under the curve y = 1/x² between x = 1 and x =4 is:

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-25

0.75

-0.35

-10

(x +a)(x +b)(x +c)(x +) = k, k≠0 is reducible to quadratic form only if

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a+b=c+d

a+c=b+d

a+d=b+c

All are correct

A Geometric Series is divergent only if

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|r|>1

|r|≥1

|r|=1

None of these

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0

1

If f(x) = x³- 2x²+ 4x -1, then f(-2) = ?

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0

-25

5

45

A machine operates if all of its three components function. The probability that the first component fails during the year is 0.14, the second component fails is 0.10 and the third component fails is 0.05. the probability that the machine will fail during the year is