Section 12.1: Three dimenstional Coordinate Geometry
Exercise 31
Describe in words the region of \(\mathbb{R}^3\) represented by the equations \(x^2 + y^2 = 4, z = -1\).
Describe in words the region of \(\mathbb{R}^3\) represented by the equations \(x^2 + y^2 = 4, z = -1\).