How can I recreate this wave using the sawtooth wave function?

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bribee
bribee 2017-5-19
编辑： Walter Roberson 2017-5-20
I am trying to recreate this plot in matlab using the sawtooth() function. I have a good start, but I'm having a hard time figuring out where to go from here. Here is what I have started :
T = 3 * 4;
Fs = 1000;
dt = 1/Fs;
t=-5:dt:T-dt;
x = sawtooth (pi*t , 0.5);
plot(t-1,x)
grid on
axis ([-5 5 -1.5 1.5]);

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回答（1 个）

Michelangelo Ricciulli
Hi! You just need to slightly modify the function sawtooth, putting a minus sign before it and adding a division by a factor 2 inside :
x = -sawtooth (pi/2*t, 0.5);

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