I know that this is a sphere and that it will be shifted, I believe, but I don't understand how I would know how to graph this without using a calculator. Does anyone know WHY it's shifted over, or another way of representing this equation that might illuminate what's going on here?
Bless you, gridwk, bless you!
3 Answers

x² + y² + z² = 2z
x² + y² + z²  2z = 0
x² + y² + z²  2z + 1 = 1
x² + y² + (z  1)² = 1
Center (0,0,1)
Radius = 1

X 2 Y 2 Z 2

X 2 Y 2 Z 2 1
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