Let f(x) e = e-7x² Find F"(x). f"(x) = Find the x-value(s) where f"(x) = 0. (Enter your answers as a comma-separated list. Round your answers to four decimal places. If there are none, enter NONE.) X =

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A: Topic = Differential equation

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A: NOTE: Refresh your page if you can't see any equations. . use the formula  .................(1)

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A: As we know that ddx(fg)=f'g+fg'  for two function f and g of x.see below the calculation and answer

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