100=a.e^(26.5b) (1)
45=a.e^(4.75b) (2)
(1)/(2)
100/45 = e^(21.75b)
e^(21.75b) = 20/9
b = (100/2175) ln(20/9)
=(4/87)ln(20/9)
=0.0367
from (1)
100=a.e^(26.5b)
a = 100/e^(26.5b)
=37.80
这是函数吗?