When the input is certainly not the global variable z, your function must return false. Otherwise return true. All inputs & variable values will be scalar.
Right and wrong
Convert Roman to Arabic Numerals
Wind outward from the center ...
intersection of matrices
Geometry: Find Circle given 3 Non-Colinear Points
Anyone for tennis? Your chances of winning a tie-break game
Arrange the names in alphabetical order (2bad1)
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Arrange the names in alphabetical order (2bad2)
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