Can't put all values from a for loop to a vector

I want to put all the values from x that come out from the loop but it only lets me put 2 values. What am i doing wrong?

function [x,y]= mems(k)

x0 = 0;

x = x0;

for i = 1:

x1 = x;

y1 = 0.3 .* x1;

x(i) = 1 + y1 - 1.4 .* x1 .^ 2;

end

end

[IOANNIS KORACHAIS]

i = 1:k ****

Answer 1

[Ameer Hamza]

Are you trying to do something like this?

x = mems(5)

function [x]= mems(k)
x0 = 0;
x = x0;
for i = 1:k 
    x1 = x(i);
    y1 = 0.3 .* x1;
    x(i+1) = 1 + y1 - 1.4 .* x1 .^ 2;
end
end