# The equation of the parabola whose vertex is origin, axis along x – axis and which passes through  the point (-2,4) is

1.  Y2 = -8x

2.  X2 = 4y

3.  Y2 = 8x

4.  Y2 = -12x

4

Y2 = -8x

Explanation :
No Explanation available for this question

# The general solution f 2 sin2θ- sin θ-1=0 is

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# If sin10x-cos10x=1 then x=

1.  nπ

2.  2 nπ+π/2

3.  (2n+1)π/2

4.   nπ/2

4

(2n+1)π/2

Explanation :
No Explanation available for this question

# If 2 sin x+cosec x=3 then x=

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# the equation of the parabola having whose vertex is origin, axis is long x – axis and which passes through the point (2,1) is

1.  Y2 = - 8x

2.  X2 = 4y

3.  Y2 = 8x

4.  Y2 = -12x

4

X2 = 4y

Explanation :
No Explanation available for this question

# the equation of the parabola whose vertex is (3,-2) axis is parelle to x- axis and latus rectum 4 is

1.  (y + 2)2 =± 4 (x – 3)

2.  ( x + 2)2 = ± 6 (y – 1 )

3.  (y – 1) 2 = 16(x + 2)

4.  (y – 2) 2 = - 8 (x – 5)

4

(y + 2)2 =± 4 (x – 3)

Explanation :
No Explanation available for this question

# the equation of the parabola having focus (2 ,1) vertex (-2, 1 ) is

1.  (y + 2)2 =± 4 (x – 3)

2.  ( x + 2)2 =± 6 (y – 1 )

3.  (y – 1) 2 = 16(x + 2)

4.  (y – 2) 2 = - 8 (x – 5)

4

(y – 1) 2 = 16(x + 2)

Explanation :
No Explanation available for this question

# If α,β are the roots of ax2+bx+c=0 and Sn=αn+βn then ==

1.  0

2.  (b2-4ac)9a+b+c)2/a4

3.  b2-4ac/a4

4.  (a+b+c)2/a4

4

(b2-4ac)9a+b+c)2/a4

Explanation :
No Explanation available for this question

# If α,β are the roots of the equation ax2+bx+c=0,then the value of the determinant is

1.  sin(α+β)

2.  sinα sinβ

3.  1+cos(α+β)

4.  0

4

0

Explanation :
No Explanation available for this question

1.  sinh2

2.  2 sinh2

3.  2 cosh2

4.  2 tanh2

4