Question # 1

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There are ______ basic techniques for solving a quadratic equation

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Two

Three

Four

None of these

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A^-

A^t

-A

A

If A and B are skew-symmetric then (AB)t is

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At Bt

AB

-AB

BA

The period sin²θis

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π²

π

2π

π/2

If we have a statement "if p then q" then q is called

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Conclusion

Implication

Unknown

Hypothesis

Which is not a half plane

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ax + by < c

ax + by > c

Both A and B

None

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The roots of the equation ax²+ bx + x = 0 are real and distinct if

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b²- 4ac <0

b²- 4ac = 0

b²- 4ac > 0

None of these

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The equation x2+ y2- 8x+ 6y+ 25= 0 represents

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A circle

A pair of straight lines

A point

None of these

The different of tan x is

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sec2 x

ln |sec x|

sec2 xdx

-cos ec2 x

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0

1

-1

2

If f (x)=a0 +a1x+a2x2+a3x3-----+0n-1xn-1+anxn then f(n) (x) is equal to

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n!

ann!

0

an

The sum of the focal distance from any point on the ellipse 9x2 +16y2 =144 is

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32

16

18

8

The parabola y²= x is symmetric about

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x-axis

y-axis

Both x and y-axis

The line y = x

The fifth term of an A.P. Whose first term is 5 and common difference is 3,is

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20

17

25

30

A square matrix A = [aij] is upper triangular when

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cij = 0

bij = 0

aij = 0 for all i > j

dij = 0

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none of these

ax2 +2hxy +by2 +2gx +2fy +c =0 may represent an ellipse if

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h2 -ab <0

h2 -ab≠ 0

h2 -ab =0

h2 -ab >0

The sum of the roots of the equation x2 -6x +2 = 0 is

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-6

2

-2

6

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0

2

4/3

5/3

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The set of rational number is represented by

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W

R

Q'

Q

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The range of y = sin x is ______

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[1, -1]

[-1, 1]

[0, -1]

[-∞+∞]

The period of|sin⁡2x| is

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π/2

-π/2

π

π/3

The proposition S(n) for any n∈ N is only true if k∈ N and

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S(k +1) is true

S(1) is true and S(k+1) is true whenever S (k) is true

S(k+1) is true whenever S (k) is true

S(k) is true

x²+ x - 5 = 0 is

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A polynomial

An inequality

An identity

None

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