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(Solved): q.1 Find the centre and radius of the sphere
x2 +y2 +z2 +6x+2y4z =2
q.2 Is (1,1,1) inside, outsi ...
q.1 Find the centre and radius of the sphere
x2 +y2 +z2 +6x+2y−4z =2
q.2 Is (1,1,1) inside, outside, or on the sphere in part 1 ? how about (1,0,0), and (0,0,1)?