Why is Fundamental Math Failing Me?

AI Thread Summary
The discussion revolves around confusion regarding the mathematical representation of the relationship between silver and copper coins. The original statement "One silver piece is equivalent to two copper pieces" is misinterpreted in the context of equations, leading to misunderstandings. The distinction between the value of the coins and the quantity of coins is crucial, as "S = 2C" and "S = C/2" represent different concepts. The conversation highlights the importance of clarity in mathematical symbols and their meanings. Ultimately, the confusion was resolved by recognizing that the same symbols were used for different contexts, clarifying the relationship between the two types of currency.
JProffitt71
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My Fundamental Math Failing

This should illicit a chuckle or perhaps despair in humanity.

The statement "One silver piece is equivalent to two copper pieces" is not equivalent to the equation "S = 2C" (Where S = silver and C = copper). I cannot for the life of me figure out why. I can work out every other way that to find the number of silver pieces you take the number of copper pieces and divide by two, and therefore it becomes "S = C/2", but I cannot look at the original statement and explain precisely why that makes sense.

I'm a physics major.
 
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What?
 
JProffitt71 said:
...

to find the number of silver coins you take the number of copper coins and divide by two

Also nonsense. you do not.

OK, I'm a doofus. Of course the number of silver coins is the the number of copper coins and divide by two. I was so distracted by your mistake in the first part that I let my mouth get ahead of my brain (not the first time).
 
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phinds said:
Look. Assign a copper coin the value of 50 cents and the silver coin the value of a dollar and examine your nonsensical statements

That makes perfect sense, and I am still perplexed. I suppose the graph is what I have an issue with. In my mind I expect it to show equivalent exchange at all points, and it does not. It actually shows the inverse.

disregardthat said:
What?

This is what happens when I do not get enough sleep it seems.
 
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The problem is that you're using the same symbol to mean two different things. In the equation S=2C, S and C stand for the value of the silver and copper pieces. But in the equation S=C/2, S and C stand for the number of silver and copper pieces that you have (assuming that currency can be exchanged at will). Since the two equations are modeling different things, it is no surprise that the equations are different.
 
Citan Uzuki, thank you very much. Order has been restored. I am quite a fool.
 
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