Mike, check out the code below:
function fun_test()
f = @(x) x^8 - 1.5;
xl = 0;
xu = 1;
sol = fun_solve(f, xl, xu);
disp(sol)
end
function fsol = fun_solve(f,xl,xu)
x = (xu + xl)/2;
fsol = f(x);
end
Since I'm not quite sure what exactly you would like to solve for, I am simply evaluating the function at the midpoint.
