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VectorCalculus[DotProduct] - ベクトルと微分作用素との内積の計算
使い方
DotProduct(v1, v2)
v1 . v2
パラメータ
v1 - ベクトル、または微分作用素
v2 - ベクトル、または微分作用素
説明
DotProduct(v1, v2) コマンド () は、v1 と v2 との内積を計算します。ここで、v1 および v2 はいずれも、ベクトル、ベクトル場、 VectorCalculus:-Del、または VectorCalculus:-Nabla のいずれかとなります。
VectorCalculus パッケージは、DotProduct の代わりに使用できる、`.` 演算子を持っています。例えば、DotProduct(v1, v2) は、v1 . v2 と同じです。また、Del . F は Divergence(F) と同じです。
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
DotProduct( <a,b>, <c,d> );
SetCoordinates( 'polar'[r,theta] );
<a,b> . <c,d>;
combine( %, trig );
F := VectorField( <r^2,theta> );
Del . F;
SetCoordinates( 'cartesian'[x,y,z] );
L := VectorField( <x,y,z> ) . Del;
L( f(x,y,z) );
参照
combine, VectorCalculus パッケージの紹介, VectorCalculus[Del], VectorCalculus[Divergence], VectorCalculus[Laplacian], VectorCalculus[SetCoordinates], VectorCalculus[Vector], VectorCalculus[VectorField]
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