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February 17th, 2018, 06:26 AM  #1 
Member Joined: Dec 2017 From: Tel Aviv Posts: 43 Thanks: 3  Critical subject
what your critical subjects that you think that is necessary to learn in math?
Last edited by greg1313; February 17th, 2018 at 11:42 AM. 
February 17th, 2018, 07:52 AM  #2 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 11,822 Thanks: 760 
0/0 = ?

February 17th, 2018, 08:12 AM  #3 
Member Joined: Dec 2017 From: Tel Aviv Posts: 43 Thanks: 3 
Nice. thanks. I never understand it. Why, is it hard? I know that divide by zero, it not possible. Because: [I don't have a formal explanation, if anybody have it is nice to reply and give it]. If I have a cake, how can I divide it to 0 people? Or: how to divide x dollar (x>0) to 0 people? 
February 17th, 2018, 11:41 AM  #4 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,757 Thanks: 1008 Math Focus: Elementary mathematics and beyond 
Let's assume division by zero is defined and write 1/0 = x. From that, 1 = 0 * x = 0. Do you see a problem?

February 17th, 2018, 11:44 AM  #5 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,757 Thanks: 1008 Math Focus: Elementary mathematics and beyond  

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