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Answers for “如何从素数密度推导出质数定理?”

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The video derives the Prime Number Theorem by treating the number of primes up to x as the area under the density curve. It simplifies this by assuming constant density, multiplying the size x by the density estimate 1/ln⁡(x)1/\ln (x) to get x/ln⁡(x)x/\ln (x).

Conditions: Uses the asymptotic density approximation 1/ln⁡(x)1/\ln (x).; The derivation assumes density is constant over the range for simplification.

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Prime density up to x is defined as the ratio of the number of primes found to the search size x. The video expresses this operationally as # PRIMES divided by SIZE.

Conditions: x is a positive integer search bound.; Density is computed by dividing the prime count by the search size.