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Solving for X... (Original Post)
progressoid
Dec 2014
OP
When my oldest turned 15, helping with homework was more her helping me, than me helping her.
progressoid
Dec 2014
#7
shenmue
(38,506 posts)1. Ha!
cyberswede
(26,117 posts)2. Cute...
but where did the "e" in the third line come from?
I want to show this to my kids, but I want to make sure I understand it first.
GeorgeGist
(25,322 posts)3. e=exponent?
pokerfan
(27,677 posts)4. e is the base of the ln (the 'natural' logarithm)
like 10 is the base of the log or common logarithm.
http://en.wikipedia.org/wiki/E_(mathematical_constant)
cyberswede
(26,117 posts)5. Perfect - thank you!
It's almost to the point where I can't help my 14 year old with his math homework any more...
progressoid
(49,992 posts)7. When my oldest turned 15, helping with homework was more her helping me, than me helping her.
And the second daughter just flew by me.
Recursion
(56,582 posts)8. Euler's number, one of the most important constants in math
? gets all the glory, but e does all the real work.
Recursion
(56,582 posts)9. It's the opposite of the ln() operation
If you have y = ln(x) then you can also say e^y = x.
Wounded Bear
(58,670 posts)6. Math is fun!