※ 引述《euler3002 (无)》之铭言： : An investor currently has $15000 invested in a money market fund earning : 3% per year compounded continuously. Market conditions are improving and he : decides to continuously transfer 10% of his account into a stock fund : earning 8% per year. How much will be in each account 4 years from now? : 请各位高手帮忙逦 令 A(t), B(t) 分别是货币基金与股票基金在时间 t 的 投资余额. A(0) = 15000, B(0)=0 由时间 t 至 t+dt 间两基金余额的变化大约是 dA(t) = 0.03*A(t) dt - 0.10*A(t) dt dB(t) = 0.08*B(t) dt + 0.10*A(t) dt 问 A(4), B(4) 分别是多少? -- 嗨! 你好! 祝事事如意, 天天 happy! 统计专业版, 需要你的支持! :) 批踢踢实业站 telnet://ptt.cc Statistics (统计学及统计软体版) 盈月与繁星 telnet://ms.twbbs.org Statistics (统计：让数字说话) 成大计中站 telnet://bbs.ncku.edu.tw Statistics (统计方法及学理讨论区) 交大资讯次世代 telnet://bs2.twbbs.org Statistics (统计与机率) 无名小站 telnet://wretch.twbbs.org Statistics (统计方法讨论区) --

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