October 21st, 2018, 04:53 AM  #1 
Senior Member Joined: Nov 2011 Posts: 250 Thanks: 3  multivalue function
Why multivalue function is a function?

October 21st, 2018, 07:00 AM  #2 
Global Moderator Joined: Dec 2006 Posts: 20,388 Thanks: 2015 
For the usual definition of a function, it isn't.

October 21st, 2018, 12:28 PM  #3 
Senior Member Joined: Oct 2016 From: Arizona Posts: 193 Thanks: 34 Math Focus: I'm still deciding, but my recent focus has been olympiad problems and math journal problems. 
The question is kind of confusing.


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