Rectangular Coordinate System in 3 Dimensions Points will be in form (x, y, z) ()22221dxxyyzz=−+−+−12midpoint=,,222xxy yz z+++Example: Consider the region defined by 041323xyz≤≤Suppose we want to find the point closest to the origin. Choose x = 0, y = 1, z = 2. The point farthest from the origin is (4, 3, 3). Example: Consider the region defined by 25xxyxz−≤ ≤ +Here, the y values are dependent upon the x value we choose.
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