solving nonlinear equations system

[mountainman]

I've been trying the following code to find the solutions of a two-equation system.

>syms x y
>
>eq1='(x-Xg)^2+(y-Yg)^2=102.9^2'
>eq2='((x-Xd(i))^2+(y-Yd(i))^2)^(1/2)=rod'
>
>
>S=solve(eq1,eq2)

Where Xg and Yg are declared variables and Xd and Yd are vectors. I want to use the solve in a loop so I need to be able to change the Xd and Yd values, hence the use of vectors and (i). The problem is that when I test the code with constant values instead of variables it works like a charm, and when I use it like you see it doesn't use the declared variables' values.

Is it possible to use this code or I'm using the wrong method??

Thanks for the answers!

 

[MikeyP]

try this

>syms x y
>
>eq1=['(x-' num2str(Xg) ')^2+(y-' num2str(Yg) ')^2=102.9^2']
>eq2=['((x-' num2str(Xd(i)) ')^2+(y-' num2str(Yd(i)) ')^2)^(1/2)=rod']
>
>
>S=solve(eq1,eq2)

M

 

[mountainman]

Thanks a lot MikeyP!

Do you know a good ressource (biiks, websites...) to get better in Matlab??