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-   -   Exponential and Logarithmic functions (https://www.askmehelpdesk.com/showthread.php?t=166797)

  • Dec 29, 2007, 11:36 AM
    susan6057
    Exponential and Logarithmic functions
    In 2000 the population of Isreal was approximately 6.04 million and by 2050 it is projected to grow to 10 million
    Use the exponential growth model A=A oekt in which t is the number of years after 2000 to find an exponential growth function that models the data.


    I am not even sure of the correct way to write this because the o and e after the A are exponents but on the bottem of this and the k and t are regular exponents

    I sure hope some one can help with this one there is also a small graph with this That I have no way of getting in here please some one help me on this
  • Dec 29, 2007, 11:41 AM
    s_cianci
    You need to find the applicable value of k for this situation. Plug in all of the other parameters ; A , Ao and t.
  • Dec 29, 2007, 05:57 PM
    jiten55
    I think this is easier way to type:

    Let p be the population at time t = 0. (year 2000)

    P is the population at time t

    P = p e^kt

    When t = 0: P = 6.04

    Hence P = 6.04 e^kt

    When t = 50, P = 10

    10 = 6.04 e^50k

    e^50k = 10/6.04 = 1.655629139

    Take log of both sides

    50 k = log 1.655629139 (base e) = 0.504181049

    k = 0.010083621

    Hence the model is:

    P = 6.04 e^kt where k = 0.010083621

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