The vector is .
Observe the figure :
The vector initiates where initiates and terminates where terminates.
The statement is true.
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1bfc6a1c317e9ccabbeafe00a5d54e2a.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=7cd43453a88a8178ee363c065019323f.png\")
initiates where ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=607efb74b70dda3b76ac66f2cb17aecf.png\")
initiates and terminates where ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=abc2ded9219572af0ce7180eb598ad95.png\")
terminates.![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=7cd43453a88a8178ee363c065019323f.png\")
initiates where ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=607efb74b70dda3b76ac66f2cb17aecf.png\")
initiates and terminates where ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=abc2ded9219572af0ce7180eb598ad95.png\")
terminates.