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

You are not logged in. #1 20110929 07:31:35
Confusing questionHi. I am a bit confused with this question the question is "Find the coordinates of M when BA is a maximum" Should I subtract the straight line from the parabola and then I don't understand how BA has any effect on M? Doesn't M just stay where it is on the xaxis?Thanks a lot in advance #2 20110929 07:56:48
Re: Confusing questionhi Deon588, You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #4 20110929 11:03:09
Re: Confusing questionhi Deon588 So So you need Can you take over from here? Bob Last edited by bob bundy (20110929 11:07:23) You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #6 20110929 17:51:32
Re: Confusing questionhi Deon588 is a quadratic there's another way to get the maximum value. I've put the graph below. As you can see it does have a maximum value. Would you be able to work out the x, at this point? Bob Last edited by bob bundy (20110929 17:53:04) You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #7 20110929 20:02:29
Re: Confusing questionHi Bob. Differential calculus is not part of my course this year at all. So I can find x either by completing the square or ?If i'm asking for help too much lately please let me know. I have exams in 3 weeks so trying to get everything cleared up before the exam. Thanks #8 20110930 01:14:31
Re: Confusing questionHi Deon588; In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #11 20110930 02:16:23
Re: Confusing questionHi Deon588; In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. 