Vector calculus in plane and space: Vectors in Planes and Space
Addition of vectors
Let #\vec{u}#, #\vec{v}#, and #\vec{w}# be three vectors. Write the linear combination #(2\vec{u}-8\vec{v}-9\vec{w}) + (3\vec{u} + 5\vec{v} + 8\vec{w})# in such a way that the three vectors each appear once with an integer scalar.
#(2\vec{u}-8\vec{v}-9\vec{w}) + (3\vec{u} + 5\vec{v} + 8\vec{w})=# #\cdot\vec{u}# #+# #\cdot\vec{v}# #+# #\cdot\vec{w}#
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