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Try solving this log equation using algebra

  1. Jan 13, 2005 #1
    6-2x = 3 * log (x)

    Is it possible to solve such an equation without graphing?
  2. jcsd
  3. Jan 13, 2005 #2


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    No.Even graphic methods only give an approximate value...

  4. Jan 13, 2005 #3

    Dr Transport

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    try Newton's method (numerical iteration)

    [tex] x_{i+1} = x_{i} - \frac{f(x_{i})}{f'(x_{i})} [/tex]. Write the function as

    [tex] f(x) = 3\log(x) - 6 + 2x [/tex] and

    [tex] f'(x) = \frac{3}{\ln(10)x} + 2 [/tex] (the derivative of the function.

    Choose a number not zero to start and just iterate away.
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