An alternate power series representation for ln(x)
#4
Yeah, I was aware of a direct relation to differentiation:

\( \frac{d}{dx} f(x) = e^{(\bigtriangleup \frac{d}{dx} f(x)) + x - f(x)} \)

And I've extended the definition of the series to:

\( \ln(x) = a + \sum_{n=1}^{\infty} \frac{(-1)^{n+1}}{ne^{an}}(x-e^a)^n \)

And I've found a beautiful return:

\( \ln(x) = e + \sum_{n=1}^{\infty} \frac{(-1)^{n+1}}{ne^{ne}}(x-e^e)^n \)

Converges for values as high as 30. My computer overflows before it stops converging.

I think my assumptions were correct. If this is true, I might find an infinite convergent power series for ln(x)

edit:
sadly, doesn't converge for values less than 1
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Messages In This Thread
RE: An alternate power series representation for ln(x) - by JmsNxn - 05/07/2011, 11:20 PM

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