The focal distance of a point on the parabola y2=8x is 10,Its coordinates are

1.  (8,8)

2.  (5,5)

3.  (3,3)

4.  (2,2)

View Answer  
4
Correct Answer :

(8,8)


Explanation :
No Explanation available for this question

For real values of x the expression x2-x+1/x2+x+1 takes values in interval

1.  [1/3, -3]

2.  (-∞,1/3)

3.  [3, ∞)

4.  [2, ∞)

View Answer  
4
Correct Answer :

[1/3, -3]


Explanation :
No Explanation available for this question

Equation of the axis of the parabola y2+6y-2x+5=0 is

1.  y-2=0

2.  y+2=0

3.  2y+3=0

4.  y+3=0

View Answer  
4
Correct Answer :

y+3=0


Explanation :
No Explanation available for this question

If x is a real and 3+5x-2x2 >0 then x lies in the interval

1.  (-1/2, 3)

2.  [-1/2, 3]

3.  (-∞, -1/2)

4.  (-∞, -1/2) U (3, ∞)

View Answer  
4
Correct Answer :

(-1/2, 3)


Explanation :
No Explanation available for this question

The focus and directrix of a parabola are (0,0) and y=2x+1.The equation of axis is

1.  x+2y-7=0

2.  x+2y=5

3.  x+2y=0

4.  2x-y=0

View Answer  
4
Correct Answer :

x+2y=0


Explanation :
No Explanation available for this question

The roots of the equation a(b-c) x2+b(c-a)x +c(a-b) =0 are

1.  1, c(a-b) / a(b-c)

2.  1, b(c-a)/a(b-c)

3.  c(a-b) /a(b-c)

View Answer  
3
Correct Answer :

1, c(a-b) / a(b-c)


Explanation :
No Explanation available for this question

If the product of the roots of the equation 5x2 -4x+2+k(4x2 -2x-1) =0 is 2, then k =

1.  -8/9

2.  8/9

3.  4/9

4.  -4/9

View Answer  
4
Correct Answer :

-8/9


Explanation :
No Explanation available for this question

If the roots of the equation x2-bx+c =0 are two consecutive integers, then b2 - 4c equal to

1.  1

2.  2

3.  3

4.  -2

View Answer  
4
Correct Answer :

1


Explanation :
No Explanation available for this question

The focus and vertex of a parabola are (1,2) and 2x-3y+1=0.Then the equation of tangent at the vertex is

1.  4x-6y+7=0

2.  4x-6y+11=0

3.  4x+6y+11=0

4.  4x-6y+5=0

View Answer  
4
Correct Answer :

4x-6y+5=0


Explanation :
No Explanation available for this question

The equation of the circle passing through (0,0) and the points of intersection of x2+y2-4x-6y+9=0 and x2+y2+4x-2y-4=

1.  x2+y2-20x-42y=0

2.  x2+y2+20x-42y=0

3.  5x2+5y2+52x+6y=0

4.  13x2+13y2+20x-42y=0

View Answer  
4
Correct Answer :

13x2+13y2+20x-42y=0


Explanation :
No Explanation available for this question
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