The vertex and focus of a parabola are (-2,2),(-6,6).Then its length of latus rectum is

1.  12√2

2.  16√2

3.  4√2

4.  8√2

View Answer  
4
Correct Answer :

16√2


Explanation :
No Explanation available for this question

Dn(X3

1.  e2x [8 x3 + 12nx2 + 3n(n-1)x+ n(n-1)(n-2)]

2.  2x-2 e2x [8 x3 + 12nx2 -3n(n-1)x+ n(n-1)]

3.  2x-3 e2x [8 x3 + 12nx2 +6n(n-1)x+ n(n-1)(n-2)]

4.  2x e2x [8 x3 + 12nx2 +3n (n-1)x+ n(n-1)(n-2)]

View Answer  
4
Correct Answer :

2x-3 e2x [8 x3 + 12nx2 +6n(n-1)x+ n(n-1)(n-2)]


Explanation :
No Explanation available for this question

A parabola with vertex at the origin and axis along the y-axis passes through(6,4),then its directrix is

1.  4y+9=0

2.  2y+7=0

3.  2y+9=0

4.  4y+7=0

View Answer  
4
Correct Answer :

4y+9=0


Explanation :
No Explanation available for this question

D20 (Sin 5x) =

1.  520 Sin 5x

2.  -520 Cos 5x

3.  -520 Sin 5x

4.  520 Cos 5x

View Answer  
4
Correct Answer :

520 Sin 5x


Explanation :
No Explanation available for this question

Vertex of the parabola 2y2+3y+4x-2=0 is

1.  (17/32,-3/4)

2.  (15/32,7/4)

3.  (25/32,-3/4)

4.  25/32,-7/4)

View Answer  
4
Correct Answer :

(25/32,-3/4)


Explanation :
No Explanation available for this question

1.  2x/2 ex cos (x+ n∏/4)

2.  2x/2 ex cos (x- n∏/4)

3.  2x/2 ex sin (x+ n∏/4)

4.  2x/2 ex sin (x- n∏/4)

View Answer  
4
Correct Answer :

2x/2 ex sin (x+ n∏/4)


Explanation :
No Explanation available for this question

If the parabola y2=-4ax passes through(-3,2) then the length of its latusrectum is

1.  4

2.  4/3

3.  1/3

4.  2/3

View Answer  
4
Correct Answer :

4/3


Explanation :
No Explanation available for this question

If (9,12) is one end of a focal chord of the parabola y2=16x then the slope of the chord is

1.  3/7

2.  12/5

3.  7/3

4.  5/12

View Answer  
4
Correct Answer :

12/5


Explanation :
No Explanation available for this question

D5 (Cos 3x)

1.  35 Cos 3x

2.  -35 Sin 3x

3.  35 Sin 3x

4.  -35 Cos 3x

View Answer  
4
Correct Answer :

-35 Sin 3x


Explanation :
No Explanation available for this question

If the equation of the circle passing through the origin and the points of intersection of the two circles x2+y2-4x-6y-3=0;x2+y2+4x-2y-4=0 is x2+y2+2ax+2by+c=0 the

1.  a,c,b

2.  c,a,b

3.  b,c,a

4.  a,b,c

View Answer  
4
Correct Answer :

a,b,c


Explanation :
No Explanation available for this question
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