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Thread: Brief Calculus

  1. #1

    Default Brief Calculus

    Average Rate of Change:
    </br> The slope of a secant line passing through (2,f(2)) and (2.01,f(2.01)) is 4. Determine the vertical distance between (2,f(2)) and (2.01,f(2.01)). Someone explain to me please.

  2. #2
    Hypnotising you crono_logical's Avatar
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    Sounds like it's saying f(x) = sec(x). Even without knowing the function though, from the coordinates given, it's saying here's the slope or gradient between x=2 and x=2.01, so what's the change in y between x=2 and x=2.01 Looks like basic arithmetic to me and doesn't even need to involve calculus Of course you could work out the true difference by using the function, but I think that's not what it's trying to aim at
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  3. #3

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    I have no idea. I just need this class for my business major and I'm done with math. What is the vertical distance? Is it .01? The chapter is applying the difference quotient of<br>
    </br><br>
    </br> f(b)-f(a)/b-a<br>
    </br><br>
    </br>But I'm still lost.

  4. #4
    Mr. Encyclopedia Kirobaito's Avatar
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    Slope is equal to rise/run. In other words, vertical distance over horizontal distance.

    In other words, (y2-y1)/(x2-x1) = 4

    We know the values of the two x amounts, 2.00 and 2.01.

    (y2-y1)/(2.01-2.0) = 4

    Simplify.

    (y2-y1)/.01 = 4

    .04 = y2-y1

    y2-y1 is the vertical distance, therefore the vertical distance is .04. Seems like 9th grade algebra to me, unless "secant line" is some entirely other concept.

  5. #5
    Old school, like an old fool. Flying Mullet's Avatar
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    My guess is your class/book is having you solve various parts of basic Calculus problems using algebra to help move you into Calculus.
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    GO! use leech seed! qwertysaur's Avatar
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    Average rate of change is a fancy way to say slope.

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    Gold is the new black Goldenboko's Avatar
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    Calculus? This Algebra I. xD Seriously, slope? I did that two years ago, and I'm only a highschooler.

  8. #8
    Draw the Drapes Recognized Member rubah's Avatar
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    Didn't you hear about how math builds on itself?

  9. #9
    Steiner is God Vivisteiner's Avatar
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    Its called the gradient, to be precise. At least in England it is.


    EDIT: Oh, and Kiribaito told you everything you need to know.

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  10. #10
    it's not fun, don't do it Moon Rabbits's Avatar
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    Quote Originally Posted by Vivisteiner View Post
    Its called the gradient, to be precise. At least in England it is.


    EDIT: Oh, and Kiribaito told you everything you need to know.
    Yup.

  11. #11

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    Guys, the book is brief calc. I label like I see it.

    Also, for you math idiots out there

    brief calc =/= calc

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