sawtooth 函数 & e" \4 Y& V6 j4 U6 x& n, v( K1 c O" T8 V
x = sawtooth(t) generates a sawtooth wave with period 2π for the elements of the time array t. sawtooth is similar to the sine function but creates a sawtooth wave with peaks of –1 and 1. The sawtooth wave is defined to be –1 at multiples of 2π and to increase linearly with time with a slope of 1/π at all other times. ; J7 x' C8 ^" N+ v$ ^+ T( a) t& |9 g: i/ {6 e& g+ I0 \