# If y=aex+be-x+c,where a,b,c are parameters,then x2y11+xy1 is equal to:

1.  0

2.  y

3.  y1

4.  y11

4

y11

Explanation :
No Explanation available for this question

# The equation of the parabola with the focus (3, 0) and the directrix x+3 = 0 is:

1.  y2 = 3x

2.  y2 = 6x

3.  y2 = 12x

4.  y2 = 2x

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y<sup>2</sup> = 12x

Explanation :
No Explanation available for this question

1.  b=2log |a|

2.  2b=log |a|

3.  b= log |2a|

4.  b2= log |a|

4

b=2log |a|

Explanation :
No Explanation available for this question

# If e and e' are the eccentricities of the ellipse 5x2+ 9y2 = 45 and the hyperbola 5x2 - 4y2 = 45 respectively,

1.  9

2.  5

3.  4

4.  1

4

1

Explanation :
No Explanation available for this question

1.  log(2/3)

2.  log(3/2)

3.  (1/2)log(2/3)

4.  (1/2)log(3/2)

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log(2/3)

Explanation :
No Explanation available for this question

# The line y=mx+c intercepts the circle x2+y2=r2 in two distinct points,if:

1.

2.

3.

4.  none of these

4

Explanation :
No Explanation available for this question

# The equation 1/r = 1/8 + 3/8 cosθ represents

1.  A parabola

2.  An ellipse

3.  A hyperbola

4.  A rectangular hyperbola

4

A hyperbola

Explanation :
No Explanation available for this question

# If f: R→R is defined by f(x)=x-[x], where [x] is the greatest integer not exceeding x, then the set of discontinuous of f is

1.  The empty set

2.  R

3.  Z

4.  N

4

Z

Explanation :
No Explanation available for this question

1.  1

2.  2

3.  3

4.  4

4

1

Explanation :
No Explanation available for this question

1.  y

2.  -y

3.  2y

4.  -2y

4