the equation of the radical axis of the ...

the equation of the radical axis of the two circles `7x^2+7y^2-7x+14y+18=0` and `4x^2+4y^2-7x+8y+20=0` is given by

`3x ^(2) + 3y ^(2) - 6y -2=0`

`21x-68=0`

`x - 2y -5 =0`

none of these

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Find the equation of radical axis of the circles x^(2)+y^(2)-3x+5y-7=0 and 2x^(2)+2y^(2)-4x+8y-13=0 .

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Find the equation of the circle passing through the centre of the circle x^(2)+y^(2)+8x+10y-7=0 and concentric with the circle x^(2)+y^(2)-4x-6y=0

(i) Find the equation of a circle , which is concentric with the circle x^(2) + y^(2) - 6x + 12y + 15 = 0 and of double its radius. (ii) Find the equation of a circle , which is concentric with the circle x^(2) + y^(2) - 2x - 4y + 1 = 0 and whose radius is 5. (iii) Find the equation of the cricle concentric with x^(2) + y^(2) - 4x - 6y - 3 = 0 and which touches the y-axis. (iv) find the equation of a circle passing through the centre of the circle x^(2) + y^(2) + 8x + 10y - 7 = 0 and concentric with the circle 2x^(2) + 2y^(2) - 8x - 12y - 9 = 0 . (v) Find the equation of the circle concentric with the circle x^(2) + y^(2) + 4x - 8y - 6 = 0 and having radius double of its radius.

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FIITJEE-MATHEMATICS -OBJECTIVE

If sin ^(-1)((1 - x ^(2))/(1 + x ^(2)))+ cos ^(-1) ((2x )/(1 +x ^(2)))...
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From a point P outside a circle with centre at C, tangents PA and PB a...
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the equation of the radical axis of the two circles 7x^2+7y^2-7x+14y+...
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Point on the curve y ^(2) = 4 (x -10) which is nearest to the line x ...
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The locus of mid-point of family of chords lamda x + y - 5 =0 (paramet...
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If the tangents at two points (1,2) and (3,6) on a parabola intersect ...
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In triangle ABC, angle C = 120^(@). If h be the harmonic mean of the l...
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sin ((1)/(5) cos ^(-1) x)=1 has
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Let E be the ellipse (x^2)/9+(y^2)/4=1 and C be the circle x^2+y^2=9 ....
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