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Math Help - Equation

  1. #1
    Member kezman's Avatar
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    Equation

    I need to solve the following equation

    3910935 = 734 (((i + 1)^9)/i)

    I need to know if its posible to solve for i.

    Thanks
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  2. #2
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    Quote Originally Posted by kezman View Post
    I need to solve the following equation

    3910935 = 734 (((i + 1)^9)/i)

    I need to know if its posible to solve for i.

    Thanks
    very difficult to solve by hand ... using technology, I get i \approx 1.88

    there is also a negative solution.

    attached is the graph of y = 3910935 - \frac{734(x+1)^9}{x}

    zeros are solutions.
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  3. #3
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    i = ~1.76335 ; 1.88 is way too high.
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  4. #4
    Member kezman's Avatar
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    thanks for the answers.
    I think the solution was something like 1.12. I have to check that. But I was wondering if it was posible to leave the variable alone at one side of the equation.
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  5. #5
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    No, not 1.12; it's 1.76335...

    734 * 2.76335^9 / 1.76335 = 3910934.96976...

    Make it 1.763350003 to get 3910935.00132...

    By the way, you only need 1 set of brackets in your posted equation:
    3910935 = 734(1 + i)^9 / i
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  6. #6
    Member kezman's Avatar
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    Yes sorry. The number 3910935 is actually 3910.935 and for that number I Have i = 0,12 as an answer.
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  7. #7
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    Quote Originally Posted by kezman View Post
    Yes sorry. The number 3910935 is actually 3910.935 and for that number I Have i = 0,12 as an answer.
    Huh? 734 * 1.12^9 / .12 = 16961.998... ; quite far from 3910.935 !
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  8. #8
    Member kezman's Avatar
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    mmm Yes I have to re check the numbers on the problem.
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