A plane vector is a quantity that has both direction and magnitude in a two-dimensional plane. In physics, it is also called a vector, which is opposite to the quantity (scalar) with only size and no direction. A plane vector is represented by a small arrow on top of a, B, C. It can also be represented by the starting and ending letters of the directed line segment of the vector.
Vector subtraction
AB-AC = CB, which is called the triangle rule of vector subtraction, which is abbreviated as: common starting point, connecting midpoint, and being subtracted.
-(-a)=a;a+(-a)=(-a)+a=0;a-b=a+(-b).
Vector V1: 5, 3
Vector V2: 2, 1
Click "calculate" to output the result
Reduce: 3, 2
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