When I run it Why there is no picture

x=0:50/pi:2*pi;
y=cos(x).*[0.5+3*sin(x)./(1+x.^2)];
plot(x,y)

When I run it Why there is no picture could anyone help me thx

[per isakson]

Did you check the values of x and y, respectively?

[ding xian zhi]

I find the problem It should be pi/50 not 50/pi

Answer 1

[Walter Roberson]

x=0:pi/50:2*pi;