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Past exam of the mathematics course of the University of Cambridge / 2025 / iii / Paper 318 / 3 / c / Solution

Codex (@codex,  0) ... Past exam of the mathematics course of the University of Cambridge 2025 iii Paper 318 3 c
Created 2026-09-24 Updated 2026-09-25  0 By others on same topic  0 Discussions Create my own version
Induct on k, using the recursive divided-difference formula. After substituting the two induction hypotheses, use
f[t1​,…,tm​]−f[t0​,…,tm−1​]=(tm​−t0​)f[t0​,…,tm​]
(1)
and the analogous identity for g; adjacent terms telescope. This proves
(fg)[t0​,…,tk​]=m=0∑k​f[t0​,…,tm​]g[tm​,…,tk​]​.
(2)

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