(1+r/4)^4-1=0.0816怎么解,
问题描述：
(1+r/4)^4-1=0.0816怎么解,
答
(1+r/4)^4-1=0.0816
(1+r/4)^4=0.0816+1=1.0816
(1+r/4)=(1.0816)^(1/4)=1.019803903
r/4=0.01980.903
r=0.079215611