1.

Let f(x)=eax+ebx, where a≠b and f′′(x)−2f′(x)−15f(x)=0 for all x∈R. Then the product ab is equal to

Answer»

Let f(x)=eax+ebx, where ab and f′′(x)2f(x)15f(x)=0 for all xR. Then the product ab is equal to



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