Question: Show that for each , [S(x - y t) + S (x + y, t)] dx = 1. Hint: Recall that S(x, t) is

Show that for each , [S(x - y t) + S (x

Show that for each , [S(x - y t) + S (x + y, t)] dx = 1. Hint: Recall that S(x, t) is a probability density function in the variable for each t > 0.

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