The second derivative is defined as d/dx(dy/dx). I have multiplied so that it is simplified, so the second derivative is, d^2x/(dx)^2, yet in some books it states it as d^2x/d(x)^2. Can this limit not act as a fraction?
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1Are you series? – SPARSE Sep 22 '21 at 18:06
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@SPARSE, does the question sound sarcastic? It was not meant to be sarcastic. Yes I am the sum of a sequence. – shreck357 Sep 22 '21 at 18:47
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...............? – shreck357 Sep 25 '21 at 13:43