Solve an equation using a dataset of parameters

[Yayuan Ren]

Hello,

I am trying to solve X from the following nonlinear equation using a dataset of parameters--a, b, c.

a+ (b-x)/(1+x)^2 + (c-x)/x*(1+x)^11=0

I also want to save the solution(s) which is a positive real number to a dataset.


*Example parameter dataset: ABC

clear

input a b c

1.1 1.2 1.4

2.1 2.3 2.7

1.5 2.1 2.5

1.6 2.2 1.9

end


I wonder how to do it in STATA. Thanks in advance.

[George Ford]

https://www.stata.com/support/faqs/programming/system-of-nonlinear-equations/

[Yayuan Ren]

Thank you, George. The codes you suggested are used to solve a system of equations. My question is to solve a single nonlinear equation. There is only one unknown variable, X, and I have a dataset of parameter a, b, c for the equation.

For example, I have 10 sets of (a, b, c) and want to solve out the X from the following equation for each set of (a, b, c).

a+ (b-x)/(1+x)^2 + (c-x)/x*(1+x)^11=0

[George Ford]

Alter the code for one equation.