...Therefore, if we use Φ( t ) to represent the matrix with n linearly independent solutions as columns, the general solution to (5) is x = Φ( t ) c ( c is a constant vector), and the solution where x = x0 at t = t0 is expressed as x = Φ( t )Φ -1 ( t0 ) x0 . Φ( t ) is called the fundamental matrix, fundamental system of solutions, or fundamental solution of (5). If we know the fundamental solution Φ( t ) of (5), we know that the solution to (4) where x = x0 at t = t0 is as follows. ... *Some of the terminology explanations that refer to the "basic system" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…したがって一次独立なn組の解を列とする行列をΦ(t)で表せば,(5)の一般解はx=Φ(t)c(cは定数ベクトル),t=t0でx=x0となる解はx=Φ(t)Φ-1(t0)x0と表される。Φ(t)を(5)の基本行列,解の基本系,基本解などとよぶ。(5)の基本解Φ(t)がわかれば,(4)のt=t0でx=x0となる解は,となることがわかっている。… ※「基本系」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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