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

You are not logged in. #1 20051027 10:50:06
Perpendicular Vectors and Scalars"Prove that if vector C is perpendicular to vectors A and B, then vector C is still perpendicular to vectors A and B when A and B are multiplied by scalars m and n respectively." #2 20051027 22:08:20
Re: Perpendicular Vectors and ScalarsThis isn't a proof, but intuitively it does not matter how much longer A and B grow, C will always be perpendicular. "The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman #3 20051028 08:43:57
Re: Perpendicular Vectors and ScalarsI don't personally see what the fuss is all about, nor do I comprehend the reasonings behind the snide remarks. I know that a scalar only changes the magnitude, but, as MathsIsFun pointed out, in itself that is not a proof. #4 20051028 13:33:39
Re: Perpendicular Vectors and ScalarsI apologize. I am not supposed to comment on Mathsyperson's and Insomnia's replies and believe me, we are polite and have a strict code of conduct in this forum and no deviation is tolerated. Character is who you are when no one is looking. #5 20051028 19:20:41
Re: Perpendicular Vectors and ScalarsYes, I'm sorry too. I think insomnia just wanted to contribute something to the conversation and because he didn't know about vectors, he resorted to an insult. Consider them gone. (And it is senior.) Why did the vector cross the road? It wanted to be normal. #6 20051028 19:32:13
Re: Perpendicular Vectors and Scalars
That was intentional. Character is who you are when no one is looking. #7 20051028 19:44:34
Re: Perpendicular Vectors and ScalarsRight. So you meant me to correct you if you were wrong about the rules, not about the spelling of senior. Well, you weren't.
It's alright to deviate though. That's just a natural part of conversation, señor. Why did the vector cross the road? It wanted to be normal. #8 20051028 21:43:58
Re: Perpendicular Vectors and ScalarsWell, I like the way we all conduct ourselves here. Sometimes a bit rough amongst friends, but that is just how friends are. Perhaps some of that "spilled over" into maths_buff's topic in a bad way, and that is something to be careful of in the future. "The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman #9 20051029 20:54:38
Re: Perpendicular Vectors and Scalars"Prove that if vector C is perpendicular to vectors A and B, then vector C is still perpendicular to vector mA + nB where m and n are scalars." Last edited by maths_buff (20051029 20:56:12) 