问题描述:
某人年初用20000元买入某理财产品,设年回报率为10%,按复利计算,则第5年未可连本带利息收回多少元?
用等比数列做.
最佳答案:
假定每年底还款a万元年初欠款:10当年底欠款:10(1+10%),还贷后欠款:10(1+10%)-a;次年底欠款:[10(1+10%)-a](1+10%),还贷后欠款:10(1+10%)^2-a(1+10%)-a=10(1+10%)^2-a(1+10%),=第三年底欠款:[10(1+10%)^2-a(1+1...
某人年初用20000元买入某理财产品,设年回报率为10%,按复利计算,则第5年未可连本带利息收回多少元?用等比数列做.
问题描述:
某人年初用20000元买入某理财产品,设年回报率为10%,按复利计算,假定每年底还款a万元年初欠款:10当年底欠款:10(1+10%),还贷后欠款:10(1+10%)-a;次年底欠款:[10(1+10%)-a](1+10%),还贷后欠款:10(1+10%)^2-a(1+10%)-a=10(1+10%)^2-a(1+10%),=第三年底欠款:[10(1+10%)^2-a(1+1...