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Thread: Kirby Math Questions Of the Week #3

  1. #1
    princeso Kirby's Avatar
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    Default Kirby Math Questions Of the Week #3

    Ill go one at a time here

    lim x -> 0

    (e^(2x) - 1) / e^(x)-1

    yeah I have no idea how to do this without stuff I shouldn't know

  2. #2
    Defenestration is imminent pichubro's Avatar
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    -1

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    princeso Kirby's Avatar
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    explain

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    princeso Kirby's Avatar
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    also wrong :I

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    what about .. eyebrows God's Avatar
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    2

    it's a simple thing when you learn it, l'hopital's rule. if you have a limit where when you plug in the value its 0/0 or infinity/infinity, take the individual derivatives of the top and bottom until you get something not undefined

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    Defenestration is imminent pichubro's Avatar
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    Quote Originally Posted by Kirby View Post
    also wrong :I
    eh shrug

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    69

  8. #8
    princeso Kirby's Avatar
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    Im not suppose to know that yet God. If I do that on a test that isn't the right work for the answer. Its like those kids in elementary school that could multiply large numbers in their head, but still needed to write down the organized process.

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    Defenestration is imminent pichubro's Avatar
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    I thought you meant (e^(2x) - 1) / e^(x)) * -1 for some reason

  10. #10
    what about .. eyebrows God's Avatar
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    use the squeeze theorem. take something like 10000000000x^2 + 2 and -100000000000x^2 + 2. they're going to be strictly above and below your function respective on, say (-1, -1), and both their limits at 0 are 2. this your function also tends to 2 at 0 since its continuous.

  11. #11
    what about .. eyebrows God's Avatar
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    i mean, that's a proof moreso a method to find the answer. but you could always just find the answer for yourself with l'hopital and make yourself appropriate functions to justify your answer with the squeeze theorem on the test

  12. #12
    Registered Users Regular ElijahWyatt's Avatar
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    thats really simple calculus........
    Its the top / the bottom cofficient wise when something= impossible numbers
    So 2x/x or 2.
    How do you not know this yet?
    "As for me, all i know is that i know nothing"

  13. #13
    princeso Kirby's Avatar
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    great theorem bro

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    what about .. eyebrows God's Avatar
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    Quote Originally Posted by ElijahWyatt View Post
    thats really simple calculus........
    Its the top / the bottom cofficient wise when something= impossible numbers
    So 2x/x or 2.
    How do you not know this yet?
    exponents arent coefficients.

    oh also. just factor the top expression. (e^x + 1)(e^x - 1). this is probably how you're expected to do it. i always do something more convoluted than necessarily with stuff like this.

  15. #15
    princeso Kirby's Avatar
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    God your avatar reminds me a lot of my math teacher:


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    Kirby the Racist

  17. #17
    princeso Kirby's Avatar
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    Yeah I can never spot the difference between the Japanese and Chinese races.

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    Registered Users Regular Flaming Flamingo's Avatar
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    Quote Originally Posted by Kirby View Post
    explain

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    Quote Originally Posted by Kirby View Post
    Yeah I can never spot the difference between the Japanese and Chinese races.
    Pretty sure the guy in God's avatar is Korean

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    Defenestration is imminent pichubro's Avatar
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    Quote Originally Posted by Kirby View Post
    Yeah I can never spot the difference between the Japanese and Chinese races.
    Facial structure and skin tone for two things...

  21. #21
    princeso Kirby's Avatar
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    The Japanese were business suits, and the Chinese have pony tails

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  23. #23
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    Is it just me and my asian fetish, or does the one is the middle look very well drawn?

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