MATLAB: I am getting a straight line while running the following code. What is going wrong?

Question

 x=0.1:0.001:10;
y=exp(-x.^2/2)/sqrt(x);
plot(x,y)

Answer 1

x=0.1:0.001:10;
y=exp(-x.^2/2)./sqrt(x);
plot(x,y)

It's ./ instead of /