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乘方和近似數
乘方和近似數
更新时间:2024-04-29 22:25:46
  1. 定義:求幾個相同因數積的運算叫乘方,記作a^n a叫底數,n叫指數/次數
  2. a^n符号的确定
  • 當a=0時,a^n=0(n≠0)
  • 當a>0時,a^n>0
  • 當a<0時,a^n>0,n為偶數,a^n<0,n為奇數(奇負偶正)

3.a^n的偶次幂具有非負性

乘方和近似數(乘方的相關概念與性質)1

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