2012/05/24 - 数学    No Comments

等式の基本性質

  1. \( A=B,~B=C \) ならば \( A=C \)
  2. \( A = B \) ならば \( A \pm C = B \pm C\) (複号同順)
  3. \( A = B \) ならば \( AC = BC \)
  4. \( A = B \) ならば \( \dfrac{A}{C}=\dfrac{B}{C}(C\neq 0)\)
  5. \(A = B,~ C = D \) ならば \(A \pm C = B \pm D \) (複号同順)
  6. \(A = B,~ C = D \) ならば \( AC = BD \)
  7. \(A = B,~ C = D \) ならば \( \dfrac{A}{C}=\dfrac{B}{D}(CD\neq 0)\)

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