When I run it Why there is no picture

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ding xian zhi 2017-3-19

评论： ding xian zhi 2017-3-19

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 2017-3-19

编辑：per isakson 2017-3-19

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

ding xian zhi 2017-3-19

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

Walter Roberson 2017-3-19

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

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