It can not be a sphere since the sign of x^{2} and y^{2} is + but the sign of z^{2} is -. It is a hyperboloid.
Naeema F.
asked • 04/16/21Determine if the given equation describes a sphere. If so, find the radius and the center.
x2 + y2 - z2 + 12x + 2y - 4z +32 = 0
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