问题如下图：
从题目中“we assume the interest is 6%constantly”，请问此题为什么不用连续fuli复利的公式计算？
选项：
A. 
B. 
C. 
解释：
NO.PZ2015120604000004 问题如下 If investor want to earn $10,000 in twenty years from now anwe assume the interest is 6% constantly. The amount the investor shoulinvest now is closest to: A.$3,118 B.$3,207. C.$4,970. A is correct.N = 20; I/Y = 6; FV = -10,000; PMT = 0; CPT PV = $3,118.05 为什么不是按天计算复利？
NO.PZ2015120604000004 问题如下 If investor want to earn $10,000 in twenty years from now anwe assume the interest is 6% constantly. The amount the investor shoulinvest now is closest to: A.$3,118 B.$3,207. C.$4,970. A is correct.N = 20; I/Y = 6; FV = -10,000; PMT = 0; CPT PV = $3,118.05 老师您好，constantly是连续计息的意思，不应该是永续年金的算法吗？
NO.PZ2015120604000004问题如下If investor want to earn $10,000 in twenty years from now anwe assume the interest is 6% constantly. The amount the investor shoulinvest now is closest to:A.$3,118B.$3,207.C.$4,970.A is correct.N = 20; I/Y = 6; FV = -10,000; PMT = 0; CPT PV = $3,118.05请问这道题如何理解呢？
NO.PZ2015120604000004问题如下If investor want to earn $10,000 in twenty years from now anwe assume the interest is 6% constantly. The amount the investor shoulinvest now is closest to: A.$3,118 B.$3,207. C.$4,970. A is correct.N = 20; I/Y = 6; FV = -10,000; PMT = 0; CPT PV = $3,118.05請問題目中 「earn $10,000」，意思應該是賺到10,000元？而FV應該等於(本金+10000元），如果直接FV=10,000, 那其中還有一部分應該是包含了本金(3118)，其實真正賺到的只有(10,000-3118)?
NO.PZ2015120604000004 FV=PV(1+R)N 可以用来做这道题吗？
