%Program 1.2 Fixed-Point Iteration
%Computes approximate solution of g(x)=x
%Input: inline function g, starting guess x0, 
%       number of steps k
%Output: Approximate solution xc
function x=fpi(g,x0,k)
x(1)=x0;
for i=1:k
  x(i+1)=g(x(i));
end