...When m ≧ 2, it is called a multiple root, and when m = 1, it is called a single root. The word "roots" is used for polynomials and algebraic equations because once all the roots are determined, the polynomial or equation can be determined by ignoring the less significant factor a 0. However, when considering a single complex number, α being a root of f ( x ) = 0 is the same as being a solution, so roots and solutions tend to be confused. ... *Some of the terminology that mentions "roots" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…m≧2のとき重根,m=1のとき単根という。多項式や代数方程式に対して,根(ルーツroots)という言葉が使われるのは,根全部が定まれば,あまり重要でない数の因子a0を無視すれば多項式および方程式が定まるからである。しかしながら,一つの複素数を考えたとき,αがf(x)=0の根であることと解であることは同一なので,根と解とが混同される傾向がある。… ※「roots」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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