一道数学

happypigfy

2000 is deposited into a savings account that earns interest at the rate of 10 percent per year, compounded semiannually. How much money will there be in the account at the end of one year?
 
我的式子是2000（1＋10％）平方
怎么答案是2205??

ballparks

10 percent是年利息，以半年复利计

2000*(1+10%/2)²⁼2205

happypigfy

xie  xie  !@!