有很多做法,看你的数学水平如何了.
我做的曲线是如下形式:当然每条曲线都有一组参数对应了.
y=a+bx+cx^2+dx^3...
a = -4.4190254E+01
b = 2.1101531E+01
c = -3.3984299E+00
d = 3.4512478E-01
e = -2.2501970E-02
f = 9.5231127E-04
g = -2.5948151E-05
h = 4.3815725E-07
i = -4.1639139E-09
j = 1.6999125E-11