Subtracting column vectors
Subtract just like any normal calculation but keep the top row separate from the bottom row.
Example 1
Take vector `a` and subtract vector `b`
vector `a=((2),(3))` vector `b=((3),(2))`
vector `a-b=((2-3),(3-2))=((-1),(1))`
Shown graphically:
vector `c=((-1),(1))`
Example 2
If vector `e=((3),(4))` and vector `f=((-1),(4))`
What is `e-f` ?
`((3),(4))-((-1),(4))=((3-(-1)),(4-4))=((4),(0))`
Remember two minuses together is a positive.
Shown graphically:
`e-f=((4),(0))`
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