Return a periodic sawtooth or triangle waveform.
The sawtooth waveform has a period 2*pi, rises from -1 to 1 on the interval 0 to width*2*pi, then drops from 1 to -1 on the interval width*2*pi to 2*pi. width must be in the interval [0, 1].
Parameters : | t : array_like
width : float, optional
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Returns : | y : ndarray
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Examples