Register to reply 
Fundamental Math Failing 
Share this thread: 
#1
Oct3111, 09:22 PM

P: 8

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. 


#2
Oct3111, 09:23 PM

Sci Advisor
P: 1,810

What?



#3
Oct3111, 09:28 PM

PF Gold
P: 6,515

[quote]



#4
Oct3111, 09:40 PM

P: 8

Fundamental Math Failing



#5
Oct3111, 09:57 PM

P: 274

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.



#6
Oct3111, 10:03 PM

P: 8

Citan Uzuki, thank you very much. Order has been restored. I am quite a fool.



Register to reply 
Related Discussions  
How do you cope when failing a math test =/?  General Discussion  39  
How bad is it that a Physics/Math hopetobe major is nearly failing Chemistry?  Academic Guidance  13  
FAILING Math Analysis Honors  Academic Guidance  10  
Failing math...  Academic Guidance  9  
Math fundamental: can linearity generate reciprocity?  General Math  9 