f(n)=1+1/2+1/3+1/4+…………+1/(2^n-1),f(k+1)=f(k)+________

问题描述:

f(n)=1+1/2+1/3+1/4+…………+1/(2^n-1),f(k+1)=f(k)+________

f(k+1)=f(k)+1/(2^(k+1)-1)