Consider two pulses (a wave with only a single peak) traveling towards each other on a string. When the instant that the peaks of these two pulses cross, the resultant disturbance has a maximum displacement of 2.98 A where A is the amplitude of the first pulse. What must be the amplitude of the second pulse be? (Here, a positive amplitude represents an upward pulse on the string while a negative amplitude represents a downward or inverted pulse.)