Q)
(chatquestion)...3
27. Let S = (x,, y,), S' = (x, y2)
Let C = (h, k)
quati
X'+
bioue
x, + x,
2
x, + x, = 2h
and
Y, + y, = 2k
SP S'Q = b°,
y, y2 = b and SR S'T = b?
X; x, = b?
Distance between foci SS = 2ae
Aisa kyu hoga
V(x - x,)' + (y, - Y.)' = (2ae)
(x, - x,) + (y, -y,) = 4a°e²
→ (x, + x, )' – 4x, x, + (y, + y,) – 4 y,y; = 4a’e
4h? - 4b2 + 4k – 46? = 4(a² – b')
dina
h + k - 2b? = a² - b²
h2 + k' = a? + 6?
Locus of centre is x + y? = a² + b? which is a circle.
1
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Locus
lo
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