x(1)=0;
x(2)=1;
for i=1:6
    x(i+2)=(x(i)*(x(i+1)-exp(-x(i+1)))-x(i+1)*(x(i)-exp(-x(i))))/...
        ((x(i+1)-exp(-x(i+1)))-(x(i)-exp(-x(i))));
end
x=x(3:8);