# The eccentricity of the hyperbola 9x2-16y2+72x-32y-16=0 is:

1.  5/4

2.  4/5

3.  9/16

4.  16/9

4

5/4

Explanation :
No Explanation available for this question

# The coefficient of x5 in the expansion of (1+x2)5(1+x)4 is:

1.  20

2.  30

3.  60

4.  55

4

60

Explanation :
No Explanation available for this question

# In the argand diagram, all the complex numbers z satisfying |z-4i|+|z+4i|=10 lie on a/an:

1.  straight line

2.  circle

3.  ellipse

4.  parabola

4

ellipse

Explanation :
No Explanation available for this question

# The product of all nth roots of unity (n>1) is:

1.  0

2.  (-1)n-1

3.  -1

4.  1

4

(-1)<sup>n-1</sup>

Explanation :
No Explanation available for this question

# If |z-3+i|=4, then the locus of z is:

1.  x2+y2-6x+2y-6=0

2.  x2+y2-6=0

3.  x2+y2-3x+y-6=0

4.  x2+y2=0

4

x<sup>2</sup>+y<sup>2</sup>-6x+2y-6=0

Explanation :
No Explanation available for this question

# Area of the triangle on the argand diagram formed by the complex numbers z, iz, z+iz, where z=x+iy is:

1.  |z|

2.  |z|2

3.  2|z|2

4.  (1/2)|z|2

4

(1/2)|z|<sup>2</sup>

Explanation :
No Explanation available for this question

# The equation of the chord y2=6x having middle point at (-1, 1) is:

1.  y-3x=4

2.  y-3x+4=0

3.  3x-y=0

4.  3x-y=1

4

y-3x=4

Explanation :
No Explanation available for this question

# The point of contact of the line 2x-y+2=0 with the parabola y2=16x is:

1.  (2, 4)

2.  (3, 4)

3.  (1, 4)

4.  (-2, 1)

4

(1, 4)

Explanation :
No Explanation available for this question

# The no.of normal that can be drawn from a point to an ellipse is:

1.  1

2.  2

3.  3

4.  4

4

4

Explanation :
No Explanation available for this question

1.  (1, -1)

2.  (-1, 1)

3.  (-1, -1)

4.  (1, 1)

4