The pole of the plane x-y+5z=0 w.r.t the sphere x²+y²+z²=9 is

(a) (2, 3, 15)
(b) (3, -3, 15)
(c) (3, -3, 5)
(d) (3, 3, 2)

Anurag Mishra Professor Asked on 28th May 2016 in Maths.
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