Question

问： 20 问：(1+r/4)的4次方＝10.25% r=?求详解

Answer 1

(1+r/4)的4次方＝10.25% = 0.1025
1+r/4 = ±四次根号下0.1025
1+r/4≈±0.56582
4+r≈±2.2633
r1≈-6.2633
r2≈-1.7367

追问

好像不对，正确答案r=9.88%怎么算的

抱歉写错了问：(1+r/4)的4次方－1＝10.25% 求解过程

追答

(1+r/4)的4次方＝1+10.25% = 1.1025
1+r/4 = ±四次根号下1.1025
1+r/4≈±1.02469508
4+r≈±4.09878032
r1≈-8.09878032
r2≈0.09878032