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Equation of Tangent at a Point (x,y) in Terms of f'(x)

If the circle...

Question

If the circles $x^{2} + y^{2} + 2 x + 2 k y + 6 = 0, x^{2} + y^{2} + 2 k y + k = 0$ intersect orthogonally, then k is

A

$2 o r - \frac{3}{2}$

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B

$- 2 o r \frac{3}{2}$

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C

$2 o r - \frac{3}{2}$

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D

$- 2 o r \frac{3}{2}$

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Solution

$A p p l y 2 g g^{1} + 2 f f^{1} = c + c^{1}$

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Q. If the circle

x^{2} + y^{2} + 2 x + 2 k y + 6 = 0,

x^{2} + y^{2} + 2 k y + k = 0

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x^{2} + y^{2} + 2 k y + k = 0

intersect orthogonally then

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