Exactly. To add vectors geometrically you just put the head of the first vector and the tail of the second vector in the same place And then, it's head to tail addition Any other questions?
The operation of finding the sum of two vectors is called vector addition .
求两个向量和的运算，叫做向量的加法。
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The review summarized the current studies of gene transfer to corneal endothelium and vectors that are been using. In addition, the review indicates the study prospect for future vectors.