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#196 - gmarrox ONLINE (06/11/2012) [-]
Here's what I learned on my first day of Calculus

x = 0.9 repeating
therefore 10x = 9.9 repeating
so {10x = 9.9 r} - {x = 0.9 r}
9x = 9
x = 1
0.9 r = 1

User avatar #203 to #196 - gmarrox ONLINE (06/11/2012) [-]
My teacher then went on to explain that he was showing us that calculus is pretty much an entire math class built around the principle "whatever, it's close enough."
User avatar #202 to #196 - Leprachaunical (06/11/2012) [-]
10x.9 is 9, buddy...
User avatar #204 to #202 - gmarrox ONLINE (06/11/2012) [-]
0.9 REPEATING

as in: 0.99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999...
User avatar #209 to #204 - Leprachaunical (06/11/2012) [-]
That makes sense. .9 and .99 are very different though.
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