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VectorCalculus[ScalarPotential] - ベクトル場のスカラーポテンシャルの計算
使い方
ScalarPotential(v)
パラメータ
v - ベクトルまたはベクトル値の手続き; ベクトル場の成分の指定
説明
ScalarPotential(v) コマンドは、ベクトル場 v のスカラーポテンシャルを計算します。これは、Gradient(f) = v のように表される関数 f となります。スカラーポテンシャルが存在しない場合には、NULL が返されます。
v がベクトル場である場合には、代数式が返されます。v がベクトル値の手続きである場合には、手続きが返されます。
例
with(VectorCalculus):
Warning, the assigned names <,> and <|> now have a global binding Warning, these protected names have been redefined and unprotected: *, +, ., Vector, diff, int, limit, series
SetCoordinates( 'cartesian'[x,y,z] );
v := VectorField( <x,y,z> );
ScalarPotential( v );
v := VectorField( <y,-x,0> );
ScalarPotential( v ); den := x^2 + y^2 + z^2;
ScalarPotential( (x,y,z) -> <x,y,z>/den );
SetCoordinates( 'spherical'[r,phi,theta] );
v := VectorField( <r,0,0> );
Gradient( % );
参照
VectorCalculus パッケージの紹介, VectorCalculus[Gradient], VectorCalculus[SetCoordinates], VectorCalculus[Vector], VectorCalculus[VectorField], VectorCalculus[VectorPotential]
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