What is the Integral of 1/x and its Relationship to ln(x)?

  • Thread starter DivergentSpectrum
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In summary, In this conversation, the author found that ln(x) is always true, although it is not true when n = -1. Taking the integrand as x-1 at first results in a positive value, but as m approaches the negative side of zero, the value becomes negative. He found the average of both sides of the limit to be almost exactly ln(x), which he graphed and found to converge almost exactly to ln(x). Finally, he shared this information with other people, who mostly say that ln(x) is just ln(x), without mentioning the power property.
  • #36
yes. I actually use complex step differentation to calculate that yellow normal vector lol its accurate to all displayed decimal places <3
so do you think that given the Fourier series method of averaging the right and left limit works, and that a Fourier series is basically a sum of exponentials, that would explain why the method of averaging the left and right limit of
lim xm/m
m→0
works?
 
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  • #37
a good trio for e^x under one exponent is
$$(1+h\, x)^{1/h}\\ (1+h\, x+h^2\, x^2)^{1/h}\\ (1+h\, x+h^2\, x^2/2)^{1/h}$$
 

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