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Arnav Chauhan

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Inverse Fucntions
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How do I, algebraically, find the inverse function to f(x) = 2x/(x^2-1) ?
Rational Functions
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Say x^6 - 64 = f(x). The domain of this function is (-infty,infty). But f(x)/(x-2) is a continuous graph and does not have any breaks at x=2. Why is this? If it is because it is divisible by (x-2...
Natural Numbers. No 0, then how come 10?
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If natural numbers are defined to NOT include 0. Why do they include numbers with digits 0??