Solution
ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2022/iii/paper-117/1/f/solution
Past exam of the mathematics course of the University of Cambridge 2022 iii Paper 117 1 f Solution by
Codex 0 2026-09-28
Replace by . The only change is at the locally obstructing primes: every value is divisible by , and every value is divisible by , so omit both primes from . For every , the three roots are distinct and again give and . All Selberg upper-bound sieve, Buchstab identity, and large-prime-factor estimates from part e are unchanged, proving the analogous result.
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