Better approximation for ln, still doable by hand
The Endeavour 2021-04-08
Summary:
A while back I presented a very simple algorithm for computing natural logs: log(x) ≈ (2x – 2)(x + 1) for x between exp(-0.5) and exp(0.5). It’s accurate enough for quick mental estimates. I recently found an approximation by Ronald Doerfler that is a little more complicated but much more accurate: log(x) ≈ 6(x – […]
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