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已知点A(-1,5)和向量=(2,3),若=3,则点B的坐标为 .
．已知点A(-1,5)和向量=(2,3),若=3,则点B的坐标为 .
=(2,3),若
=3
=(2,3),若
=3
=(2,3),若
=3
=(2,3),若
=3
=3a,则点B的坐标为______________.