APKPure Appを使用する
Visual Vector Mathの旧いバージョンをダウンロードすることが可能
ビジュアルベクトル数学：ベクトルを視覚化！
Visual Vector Math was created to provide a way to visualize vectors and the different operations and the effects of those operations.
The app has arithmetic ability to do addition, subtraction, multiplication, and division with vectors.
The app also has the ability to do vector operations:Vector cross product, dot(scalar) product, unit vector calculation, and magnitude calculation.