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Mathematics 9 Online
OpenStudy (anonymous):

f(x)=1/2e^x

OpenStudy (anonymous):

\[f(x)=\frac{ 1 }{2 }e^{x}\]

jimthompson5910 (jim_thompson5910):

If you're deriving f(x), the nice thing about e^x is that the derivative of that is itself So if \[\Large f(x) = e^{x}\], then \[\Large f^{\prime}(x) = e^{x}\]

jimthompson5910 (jim_thompson5910):

dun dun dun...jk lol

OpenStudy (anonymous):

So the 1/2 means nothing?

jimthompson5910 (jim_thompson5910):

so if you have the constant out front, it makes no difference (because you pull that out when you derive anyway)

jimthompson5910 (jim_thompson5910):

that means \[\Large f(x) = \frac{ 1 }{2 }e^{x}\], then \[\Large f^{\prime}(x) = \frac{ 1 }{2 }e^{x}\]

OpenStudy (anonymous):

so the derivative is simply 1/2 e^x ....literally the same thing?

jimthompson5910 (jim_thompson5910):

exactly, that's why e^x is a very handy function in calculus

OpenStudy (anonymous):

well thats crazy

jimthompson5910 (jim_thompson5910):

essentially, the rate of growth at any point on f(x) = e^x is exactly equal to e^x

jimthompson5910 (jim_thompson5910):

so that's probably where the whole constant came from anyway (not entirely sure though)

jimthompson5910 (jim_thompson5910):

hopefully they're all e^x questions because they aren't so bad once you know how to work them

jimthompson5910 (jim_thompson5910):

well that's why you have OS lol, so you can ask when you get stuck

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