# (Li points)_Ware_Solution (AlLor Nothing) Demonstrate by direct calculation that the function u(x,t) = f(x -at) satisfies one of the

###### Question:

(Li points)_Ware_Solution (AlLor Nothing) Demonstrate by direct calculation that the function u(x,t) = f(x -at) satisfies one of the three equations given below Satisfies" means that the substitution of ulx,t) = f(x- at) makes both sides of the equation to be equal ar2 at?

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