S001 · implies
操作前
boundary mode=finite_samples; scale=19
操作後
check the precise hypothesis that fails
條件:無
先說明失敗的是哪個假設,不把所有失敗情形都判成發散。
步驟識別與依賴
規則:ratio_hypothesis_audit · 依賴:G001
P1000-0768 · q-20261015-advance-20261117-r02-ratio-test-series-0093
eventually nonzero、absolute successive ratio與limit存在責任。操作=ratio-test-boundary;資料={"mode":"finite_samples","scale":19}。請依 exact_ordered_tuple_declared_by_interface 欄序回答。
G001 — eventually nonzero、absolute successive ratio與limit存在責任。操作=ratio-test-boundary;資料={"mode":"finite_samples","scale":19}。請依 exact_ordered_tuple_declared_by_interface 欄序回答。比值判別需要最終非零尾端、絕對值比值與真正存在的極限;邊界題指出失敗的假設,不判定級數本身。
操作前
boundary mode=finite_samples; scale=19
操作後
check the precise hypothesis that fails
條件:無
先說明失敗的是哪個假設,不把所有失敗情形都判成發散。
規則:ratio_hypothesis_audit · 依賴:G001
操作前
ratios=1/2 only for n≤19
操作後
declared later ratios=2
條件:無
後面比值可以改變;題目已給出一個會改變的完整反例尾端。
規則:favorable_prefix · 依賴:G001, S001
操作前
after the finite prefix, multiply magnitude by2 each step
操作後
terms eventually grow instead of tending to0
條件:無
可取正初項依比值遞迴,有限有利前綴後仍有倍增尾端。
規則:prefix_counterexample_tail · 依賴:G001, S002
操作前
missing or misused premise
操作後
this attempted test is not licensed
條件:無
保留原題邊界標記,不偷加未證的一般收斂結論。
規則:boundary_verdict · 依賴:G001, S003
S004 · premise_and_result_audit — 有限核對不證無限尾端;本步的量詞、非零分母與絕對值條件仍須保留。S003 · premise_and_result_audit — 有限核對不證無限尾端;本步的量詞、非零分母與絕對值條件仍須保留。S002 · premise_and_result_audit — 有限核對不證無限尾端;本步的量詞、非零分母與絕對值條件仍須保留。S001 · premise_and_result_audit — 有限核對不證無限尾端;本步的量詞、非零分母與絕對值條件仍須保留。(finite_samples, 19, ratios_equal_1/2_for_n<=19_then_equal_2, finite_prefix_cannot_determine_ratio_limit, 否)
上述完整代值與條件核對得到原題答案;欄位次序及真假標記保持原始合約。
覆核日期:2026-10-26
原題、答案、步驟表達式、數值 AST 與既有歷史保持原樣;原來的候選狀態屬於來源歷史,不覆寫為形式化證明。
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