Question

How to prove i/4 less than log 2 base 10 less than 1/2?

Answer 1

Yes an approximate let $\frac{1+x}{1-x}=2$ thus$x=1/3$ and then using taylor series for$log(\frac{1+x}{1-x})=2(x+\frac{x^3}{3!}+..)$