年利息=100*8%=8元 到期面值100元, 设实际年化收益率为R,则有: 8*(1-(1+R)^(-10))/R+100/(1+R)^10-95=0 令F(R)=8*(1-(1+R)^(-10))/R+100/(1+R)^10-95 F(8%)=5 F(10%)=-7.289 (R-8%)/(10%-8%)=(0-5)/(-7.289-5) R=(10%-8%)*(0-5)/(-7.289-5)+8%=8.81%