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Natural log

by Bengo
Tags: natural
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Bengo
#1
May5-14, 03:14 PM
P: 44
Why is e^-1 the inverse of natural log e? Thank you
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mathman
#2
May5-14, 03:21 PM
Sci Advisor
P: 6,080
Your question is confusing. Let y = ln(x), then x = ey. If x = e, y = 1.
Bengo
#3
May5-14, 03:39 PM
P: 44
Well I was reading a section on charging/ discharging capacitors and this is what it said: charge on a capacitor builds up on the capacitors plates exponentially, indicated in the passage by the repeated appearance in the charge equation of e^-1, the inverse of the natural log e. And I think the equation they are referring to is Q=Qmax(1- e^-1).

mfb
#4
May5-14, 04:14 PM
Mentor
P: 11,928
Natural log

Could it mean "the inverse of the [basis of the] natural log[,] e"? As e-1 = 1/e
Bengo
#5
May5-14, 04:39 PM
P: 44
Quote Quote by mfb View Post
Could it mean "the inverse of the [basis of the] natural log[,] e"? As e-1 = 1/e

Ok I'll go with that because it's what I was thinking too. Thank you!


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