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View Poll Results: Do you understand change? | |||
Yes I understand change |
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4 | 17.39% |
Yes I understand rate of change |
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1 | 4.35% |
Yes I understand differences in rate of change |
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17 | 73.91% |
I don't get it at all |
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1 | 4.35% |
Voters: 23. You may not vote on this poll |
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#76
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Bravo sir, well done! Quote:
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Te futueo et caballum tuum 1986 300SDL, 362K 1984 300D, 138K Last edited by cmac2012; 01-08-2007 at 12:42 AM. |
#77
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I believe the reason for "math phobia" is that there is a greater risk of failure, and that failure can be measured.
We have raised a generation that have high self esteem but can't really produce. Math has real answers, specific answers. ( well as long as we define the terms) In a base 10 system, 2+2 =4. "3" is a wrong answer'; not worth "partial credit". You just can't BS your way thru math. However, you can certainly BS your way thru pshychology, or sociology, or even history. And you can feel good about it. I am married to a women who got partial credit on a history exam by answering the question, " What is the Monroe Doctrine" with " It was a doctrine by Monroe"
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1982 300SD " Wotan" ..On the road as of Jan 8, 2007 with Historic Tags ![]() |
#78
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Mathematics is about proofs and is definitely a creative process. There may indeed be "real answers," but in the real mathematical world, nobody knows what they are. |
#79
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#80
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kerry- thanks for the memory... i remember the bus driver having one of those..
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"It's normal for these things to empty your wallet and break your heart in the process." 2012 SLK 350 1987 420 SEL |
#81
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2009 ML350 (106K) - Family vehicle 2001 CLK430 Cabriolet (80K) - Wife's car 2005 BMW 645CI (138K) - My daily driver 2016 Mustang (32K) - Daughter's car |
#82
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Quote:
http://www.peachparts.com/shopforum/showthread.php?p=1026934#post1026934
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Te futueo et caballum tuum 1986 300SDL, 362K 1984 300D, 138K |
#83
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So you took linear algebra, got discouraged, and became a cab driver.
You're like that character in Good Will Hunting.
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You don't need a weatherman to know which way the wind blows - Robert A. Zimmerman |
#84
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Never a dull moment at Berry Hill Farm. |
#85
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Maybe I am too practical but I look at what a college degree can get me in the market place. Math has no market value to me, I have no desire to design buildings or be an engineer.
I can understand and respect education for the sake of education. But still some people spend a lot of time working on these degrees then get stuck working at crummy jobs with people who never went to college. To me that’s the value of college. I could turn my high school diploma into a very comfortable living working construction. College is very expensive and very time consuming, so I want to get something out of it.
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2016 Corvette Stingray 2LT 1969 280SE 2023 Ram 1500 2007 Tiara 3200 |
#86
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I've made more money with my working class skills than I have with my academic skills (and I have 18 yrs of post high school education) but I wouldn't trade my education for anything. I think college needs to be approached with the attitude, "How can this experience make me a richer, broader, more self-actualized person?"
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1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13 |
#87
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#88
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I don't know 4 more semesters and that degree is hanging on the wall!
![]() Health for example. Why did I need to spend hundreds of dollars last fall to be told that drugs are bad again? Please don't insult me. Don't get me going on gym either, wtf? ![]() Math is another thing, for me its like banging my head into a brick wall, and sours me to a whole aspect of college. I was never into school and had to be dragged kicking and screaming since day one. So take my point of view with a grain of salt.
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2016 Corvette Stingray 2LT 1969 280SE 2023 Ram 1500 2007 Tiara 3200 |
#89
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It's hard to believe but cab driving is one trip of a job. You get totally random encounters with just about every type of person you could imagine. I mean, who hasn't taken a cab at least once or twice? And in a cab, people are trusting their life to you, it sorta makes them open up, about half of the time anyway. Oh man, I used to love it when the ladies would lean forward from the back seat, leaning on the front seat back. And you see the mean streets up close, second only to what cops see, I'm guessing. It's a seriously dead end job though. I make as much now in 6 or 7 hours as I used to be happy to make in 2 or 3 ten to twelve hour shifts. ![]()
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Te futueo et caballum tuum 1986 300SDL, 362K 1984 300D, 138K Last edited by cmac2012; 01-09-2007 at 04:39 AM. |
#90
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The more I think about it, rate of change is a tricky concept. When you're moving at 60 mph, your position is changing but the rate at which it is changing is constant. A body falling in a vacuum, say 1,000 miles away from earth, is changing speed, accelerating at a steady rate.
Best I can recall, calculus has two main functions: to find the slope of any line tangent to an X - Y axis graph at any point on it -- the derivative; and to find the area between a non - linear graph and, say, the X axis -- the integral. Imagine a graph of the function Y = sinX + 2. Since the sin of any angle will always be between one and negative one, this function will be a sin wave completely above the X axis. With calculus, ideally you could find the area between the graph and the X axis for some portion of the graph. I say ideally because I can't recall if it only works with polynomials, where you have a finite number of constants and variables which are combined using only addition, subtraction, multiplication, and non-negative whole number exponents (raising to a power). This from Wikipedia, better than I could have said it. The sin function is not one of those. Not sure how you could use the ability to find the area between a curved line and the X axis, or between two curved lines, dlineated by straight lines on either end. I understand it opens all sorts of boxes though. More to the point, derivatives find the slope of a line tangent to the graph at any point on the graph and give a value for the rate of change of that graph at that point. Again from Wikipedia: A derivative is an instantaneous rate of change: it is calculated at a specific instant rather than as an average over time. And again, I'm not sure exactly what that operation is used for but I imagine physicists and aerospace engineers know quite well.
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Te futueo et caballum tuum 1986 300SDL, 362K 1984 300D, 138K Last edited by cmac2012; 01-09-2007 at 04:41 AM. |
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