# If the locus of the centre of the circle which cuts the circles x2+y2+4x-6y+9=0 and x2+y2-4x+6y+4=0 orthogonally is ax+by+c=0,(a>0) then the ascending order of a,b,c is

1.  a,b,c

2.  b,c,a

3.  c,a,b

4.  a,c,b

4

b,c,a

Explanation :
No Explanation available for this question

1.  [(sin-1x)3/3 ]+c

2.  1/4(sin-1x)4+c

3.  (sin-1x)4+c

4.  (sin-1x)3+c

4

1/4(sin-1x)4+c

Explanation :
No Explanation available for this question

# The centre of similitude of the two circles x2+y2+4x+2y-4=0 and x2+y2-4x-2y+4=0 is

1.  (4,1)

2.  (1,-4)

3.  (1,4)

4.  (4,2)

4

(4,2)

Explanation :
No Explanation available for this question

1.  log|ex+xe|+c

2.  1/e log|ex+xe|+c

3.  -1/e log|ex+xe|+c

4.  -log|ex+xe|+c

4

1/e log|ex+xe|+c

Explanation :
No Explanation available for this question

# If the external centre of similitude of the circles x2+y2-2x-4y+4=0 and x2+y2+4x-2y+1=0 is Q then Q=

1.  (-4,-3)

2.  (4,3)

3.  (4,-3)

4.  (-4,3)

4

(4,3)

Explanation :
No Explanation available for this question

1.  Tan(xex)+c

2.  -Cot(xex)+c

3.  Sin(xex)+c

4.  Sinex+c

4

-Cot(xex)+c

Explanation :
No Explanation available for this question

1.  π/4-1/2(log2)

2.  π/4-1/4(log2)

3.  π/4+1/2(log2)

4.  π/4+1/4(log2)

4

π/4-1/2(log2)

Explanation :
No Explanation available for this question

# The circles x2+y2+4x-2y+4=0 and x2+y2-2x-4y-20=0 

1.  Intersect each other

2.  Touch each other externally

3.  Touch each other internally

4.  Are such that one circle lies entirely inside another circle

4

Are such that one circle lies entirely inside another circle

Explanation :
No Explanation available for this question

1.  π

2.  π+λ and λ>0

3.  π/2

4.  π/3

4

π/2

Explanation :
No Explanation available for this question

1.  1

2.  π

3.  π/2

4.  1/6

4