Vectors with head pointing to the left?

Question

Anyone knows what this vector means?
Negative vector (in opposite direction) of #vec C# ?

Something like #vec (AB)=-vec(BA)?#

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Answer 1 · 2017-12-04T16:00:49

See below.

It is possible to represent a vector in the opposite direction in two pays.

If we have: #vecC# ,a vector in the opposite direction could be:

#-vecC#

If the vector is in the form:

#vec(AB)# the vector in the opposite direction opposite can be:

#vec(BA)# or #-vec(AB)#