Python中的 numpy.fv()
numpy.fv(rate, nper, pmt, pv, when = 'end') :此财务函数可帮助用户计算未来值。
参数 :
rate : [scalar or (M, )array] Rate of interest as decimal (not per cent) per period
nper : [scalar or (M, )array] total compounding periods
pmt : [scalar or (M, )array] fixed payment
pv : [scalar or (M, )array] present value
when : at the beginning (when = {‘begin’, 1}) or the end (when = {‘end’, 0}) of each period. Default is {‘end’, 0}
返回 :
value at the end of nper periods
正在求解的方程:
fv + pv*(1+rate)**nper +
pmt*(1 + rate*when)/rate*((1 + rate)**nper - 1) == 0
或当速率 == 0
fv + pv + pmt * nper == 0
代码 1:工作
# Python program explaining fv() function
import numpy as np
'''
Question :
Future value after 10 years of saving $100 now,
with an additional monthly savings of $100.
Assume the interest rate is 5% (annually)
compounded monthly ?
'''
# rate np pmt pv
Solution = np.fv(0.05/12, 10*12, -100, -100)
print("Solution : ", Solution)
输出 :
Solution : 15692.9288943
参考 :
https://docs.scipy.org/doc/numpy-1.13.0/reference/generated/numpy.fv.html#numpy.fv
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