Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ ¹ ² ³ °
 

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Simple Dot Product Question.. Please help, studying for quiz.How do you solve this: #2 20050908 20:12:33
Re: Simple Dot Product Question.. Please help, studying for quiz.A . (A + 3B +7C) = A.A + 3(A.B) + 7(A.C) Last edited by Atled (20050910 10:52:58) #3 20050908 20:21:52
Re: Simple Dot Product Question.. Please help, studying for quiz.(Atled  great post again  tell us more about yourself!) "The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman #4 20050908 22:59:49
Re: Simple Dot Product Question.. Please help, studying for quiz.
I don't understand how come A.A is 4. Is A = A? What logic do u use to assume them equal? Thanks. #5 20050909 07:17:22
Re: Simple Dot Product Question.. Please help, studying for quiz.So long ago since I did dot or cross products, but I may venture an answer: "The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman Pages: 1 