# Equation of the auxiliary circle of the ellipse (x2/12)+(y2/18)=1 is

1.  x2+y2=9

2.  x2+y2=18

3.  x2+y2=12

4.  x2+y2=30

4

x2+y2=18

Explanation :
No Explanation available for this question

# Equation of the ellipse with fociand length of major axis 26 is

1.  (x2/144)+(y2/169)=1

2.  (x2/29)+(y2/4)=1

3.  (x2/39)+(y2/14)=1

4.  (x2/169)+(y2/144)=1

4

(x2/169)+(y2/144)=1

Explanation :
No Explanation available for this question

# The sum of the distances of any point on the ellipse 3x2+4y2=24 from its foci is

1.  8√2

2.  8

3.  16√2

4.  4√2

4

4√2

Explanation :
No Explanation available for this question

# If the line y=x+c touches the ellipse 2x2+3y2=1 then c=

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# The equation to the locus of point of intersection of the line y-mx=√(4m2+3), my+x = √(4+3m2) is

1.  x2+y2=12

2.  x2+y2=7

3.  x2+y2=1

4.  x2+y2=4

4

x2+y2=7

Explanation :
No Explanation available for this question

# The locus of point of intersection of orthogonal tangents to the ellipse [(x-1)2/16]+[(y-2)2/9]=1 is

1.  (x-1)2+(y-2)2=25

2.  (x-1)2+(y-2)2=7

3.  (x+1)2+(y+2)2=25

4.  (x+1)2+(y+2)2=7

4

(x-1)2+(y-2)2=25

Explanation :
No Explanation available for this question

# If the line x+ky-5=0 is a tangent to 4x2+9y2=20 then the value of k is

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# The pole of the straight line x+4y=4 with respect to the ellipse x2+4y2=4 is

1.  (1,4)

2.  (4,1)

3.  (4,4)

4.  (1,1)

4

(1,1)

Explanation :
No Explanation available for this question

# The pole of the line x= -a/e with respect to the ellipse (x2/a2)+(y2/b2)=1 is

1.  (a/e,0)

2.  (-(a/e),0)

3.  (-ae,0)

4.  (ae,0)

4

(-ae,0)

Explanation :
No Explanation available for this question

1.  x2+y2+z2=16

2.  x2+y2+z2=8

3.  x2+y2+z2=4

4.  x2+y2+z2=32

4