If the length of the chord of circle `x^2+y^2=4` and `y^2=4(x-h)` is maximum, then find the value of `hdot`

If the length of the chord of the circle x^2+y^2=4 through (1,1/2) which is of minimum length is d, find d^2 .

The length of the diameter of the circle x^(2)+y^(2)-4x-6y+4=0 is -

Find the length of the chord of the circle x^2 + y^2 =4 through (1, 1/2) which is of minimum length.

Find the locus of the midpoint of the chords of circle x^(2)+y^(2)=a^(2) having fixed length l.

If 2x-3y=0 is the equation of the common chord of the circles x^(2)+y^(2)+4x=0 and x^(2)+y^(2)+2 lambda y=0 then the value of lambda is

The length of the common chord of the circles x^(2)+y^(2)-2x-1=0 and x^(2)+y^(2)+4y-1=0 , is

Find the length of the chord cut-off by y=2x+1 from the circle x^(2)+y^(2)=2