MATLAB: How to solve an equation which has another function in it

Question

Hi everyone,

I am trying to solve an equation like

4*x+g(x)=18 where g(x)=2*x+6

meaning that g(x) changes with iterations. I am trying to use solve function, couldn't figure it out.

thanks in advance

Answer 1

Not really sure what you want.

Try this:

g = @(x) 2.*x + 6;  
f = @(x) 4.*x + g(x) - 18;  
s = fzero(f, 1)