Update README.md
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@ -4,6 +4,7 @@ An arithmetic derivative calculator that uses these simple formulas:
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* 0' = 1' = 0;
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* 0' = 1' = 0;
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* if n is a prime, n' = 1;
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* if n is a prime, n' = 1;
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* if n = ab (a and b > 1), n' = a'b + ab'
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* if n = ab (a and b > 1), n' = a'b + ab'
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* (-n)' = -(n')
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More about arithmetic derivative:
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More about arithmetic derivative:
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https://en.wikipedia.org/wiki/Arithmetic_derivative
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https://en.wikipedia.org/wiki/Arithmetic_derivative
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