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Question
Show that `[(5, -1),(6,7)][(2,1),(3,4)] != [(2,1),(3,4)][(5,-1),(6,7)]`
Solution
right side`[(2,1),(3,4)][(5,-1),(6,7)]`
`[(10 + 6, -2 + 7),(15 + 24, -3 + 28)] `
`= [(16, 5),(39, 25)]`
left side `[(5,-1),(6,7)][(2, 1),(3, 4)]`
`= [(10 - 3, 5 - 4),(12 + 21, 6 + 28)]`
` =[(7 , 1),(33, 34)]`
left side `ne` right side
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