how can i get a triangle wave.
i used these commands ,but i does not work.
f(x):= if x < 0 then -1 else 1;
g(x):= f(sin(x));
z(x):=Integrate(g(x),x);
wxplot2d(g,[x,-10,10],[y,-2,2]);
the error message is :
plot2d: expression evaluates to non-numeric value somewhere in plotting range.
please tell me the correct way.
thanks very much!
thanks very much.
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Wutong Feng