Curiously simple approximations

As I’ve written about here and elsewhere, the following simple approximations are fairly accurate. log10 x ≈ (x-1)/(x+1) loge x ≈ 2 (x – 1)/(x + 1) log2 x ≈ 3(x – 1)/(x + 1) It’s a little surprising that each is as accurate as it is, but it’s also surprising that the approximations for […] The post Curiously simple approximations first appeared on John D. Cook....

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