Two pulses traveling on the same string are described by
y1 = 5 / (3x ─4t)2 + 2
And
y2 = ─5 / (3x + 4t ─6)2 + 2
(a) In which direction does each pulse travel?
(b) At what time do the two cancel everywhere?
(c) At what point do the two pulses always cancel?