https://github.com/swatish17/MQ7-Library/tree/master 
 
/*
The coefficients are estimated from the sensitivity characteristics graph
of the MQ7 sensor for CO (Carbon Monoxide) gas by using Correlation function.
 
Explanation :
	The graph in the datasheet is represented with the function
	f(x) = a * (x ^ b).
	where
		f(x) = ppm
		x = Rs/R0
	The values were mapped with this function to determine the coefficients a and b.
*/
 
#define coefficient_A 19.32
#define coefficient_B -0.64
 
여기에 이런게 있는데
coefficient_A, coefficient_B의 값은 어떻게 나온건지 알 수 있나요? 
 
제가 계산해야하면 찾아야해서