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  1. How to evaluate the complex logarithms $\\log(i)$ and $\\log(3+4i)$?

    Sep 11, 2020 · How to evaluate $$\\log(i)?$$ Also, how to evaluate $$\\log(3+4i)?$$ I am reading complex analysis and I know that logarithm is a multibranched function and is periodic. What I have …

  2. Taylor Series for $\log (x)$ - Mathematics Stack Exchange

    Nov 29, 2013 · Does anyone know a closed form expression for the Taylor series of the function $f(x) = \\log(x)$ where $\\log(x)$ denotes the natural logarithm function?

  3. Why are there two different types of graph for logarithmic functions

    3 Why are there two different types of graph for logarithmic functions loga X log a X for different range of base,i.e; for : 0 <a <1 0 <a <1 and a> 1 a> 1 ?

  4. How to figure out the log of a number without a calculator?

    Apr 23, 2017 · The first link is simply using the basic rules for logarithms - the log of a product is equal to the sum of the logs (working in base 10).

  5. complex analysis - How to derive the value of $\log (-1 ...

    Oct 11, 2015 · Here's a common definition: log z = log|z| + i arg z + i2πk log z = log | z | + i arg z + i 2 π k Where arg z arg z returns the argument or angle of the complex number z z. Note that the final …

  6. Easy way to remember Taylor Series for log (1+x)?

    May 2, 2015 · Easy way to remember Taylor Series for log (1+x)? Ask Question Asked 10 years, 8 months ago Modified 6 years, 6 months ago

  7. logarithms - log base 1 of 1 - Mathematics Stack Exchange

    5 If we defined log1 1 log 1 1, we would want it to satisfy the basic properties that log satisfies. One of these properties is aloga b = b a log a b = b Well, this is bad, because setting a = 1 a = 1, we find …

  8. Computing the Fourier coefficients and series for $\log (\sin (x))$

    Whenever I see one write $\log (z_1z_2)=\log (z_1)+\log (z_2)$ without specifying the branches that are assumed, I begin to wonder if the analysis is sound. Of course, here one only needs to ensure that …

  9. Why isn't $\\log_1 (1) = 1$? - Mathematics Stack Exchange

    log1(1) log 1 (1) could be any number, because any number solves the equation 1x = 1 1 x = 1. This is a bad thing for a function (which is what we want the logarithm to be), so we leave it undefined.

  10. Natural log of a negative number - Mathematics Stack Exchange

    Jan 10, 2021 · My teacher told me that the natural logarithm of a negative number does not exist, but $$\ln (-1)=\ln (e^ {i\pi})=i\pi$$ So, is it logical to have the natural logarithm of a negative number?