Question: S A pulse is described by y = 3 / [( x + 2t) + 4] in SI units. What is the velocity of the

S A pulse is described by y = 3 / [( x + 2t) + 4] in SI units. What is the velocity of the pulse? O 2 m/s in the -x direction O 2 m/s in the +x direction O 4 m/s in the +x direction O 3 m/s in the +x direction O 4 m/s in the -x direction

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