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i have a series of graphs and i know the general form of governing equation is:

p = (a + b*x + c*(x^2)) / (1.0 + d*x + e*(x^2)) + f

(x is Degree)

P is dependent on two things:

1-x

2-a constant parameter DH

it means y changes with both DH and x,

the question is i know the general form of equation which is like above equation,but i must find the role of DH in this equation,for every graph i know the quantity of a,b,c,d,e and f but i do not know what is the relation of this constants with DH,how i can find and insert DH in my equation?is there any method or software that i can find the role of DH in my equation?

for example i need an equation like this:

P=(0.5*DH+(DH^0.2)*x+(DH/2)*(x^2))/(1.0 + d*x+ (DH^0.45*(x^2)) + DH/10

or something like it.

thanks

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# How to find role of Constant coeficient DH?

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