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PUMaC 2023 · 代数（B 组） · 第 3 题

PUMaC 2023 — Algebra (Division B) — Problem 3

专题
Discrete Math / 离散数学
难度
L3
来源
PUMaC

题目详情

  1. Let a, b, c, d, e, f be real numbers such that a + b + c = 14, d + e + f = 77, and ad + be + cf = 2 2 2
解析
  1. Let a, b, c, d, e, f be real numbers such that a + b + c = 14, d + e + f = 77, and ad + be + cf = 2 2 2