why can't i draw diagram of function abs(sin3x/sin(x/2)) in matlab?

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Le Dung
Le Dung 2017-4-13
评论： Star Strider 2017-5-9
my code:
x=-pi:0.1:pi;
y=abs(sin(3*x)/sin(x/2));
plot(x,y);

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Star Strider
Star Strider 2017-4-13
Because you are not using element-wise division (with the ‘dot’ operator, as ‘./’).
This works:
x=-pi:0.1:pi;
y=abs(sin(3*x)./sin(x/2));
plot(x,y);
See the documentation on Array vs. Matrix Operations for all the details.
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