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veronica1999
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 Jun 4, 2012
 63
Could someone please take a look at my attached work?
10. Given a vector u, the familiar absolutevalue notation u is often used for its magnitude. Thus the expressions u•u and u^2 both mean the same thing. What exactly do they mean?
11. For any two numbers a and b, the product of a−b times itself is equal to a^2−2ab+b^2. Does this familiar algebraic result hold for dot products of a vector u − v with itself? In other words, is it true that (u − v) • (u − v) = u•u−2u•v+v•v? Justify your conclusion, trying not to express vectors u and v in component form.
10. Given a vector u, the familiar absolutevalue notation u is often used for its magnitude. Thus the expressions u•u and u^2 both mean the same thing. What exactly do they mean?
11. For any two numbers a and b, the product of a−b times itself is equal to a^2−2ab+b^2. Does this familiar algebraic result hold for dot products of a vector u − v with itself? In other words, is it true that (u − v) • (u − v) = u•u−2u•v+v•v? Justify your conclusion, trying not to express vectors u and v in component form.
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