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Homework Help: I'm not sure how to start solving this

  1. Dec 2, 2004 #1
    i have two equations -r^2/wc
    divided by r^2-(1/(wc)^2)
    equals -7903

    and r/(wc)^2
    divided by r^2-(1/(wc)^2)
    equals 3287

    w is a known quantity. How do I start to solve for r and c.
  2. jcsd
  3. Dec 2, 2004 #2


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    1. Step:
    Divide the equations by each other; this gets rid of the difficult denominator, and you may express "c" in terms of "r" (or the other way around, if you prefer that).
    Insert the given expression for "c" into one of your ORIGINAL equations.
    You have now a single equation in "r" which you may solve.
    With your "r"-solutions, put these into the relation you derived in 1. between "c" and "r" to determine the corresponding solving values for c.
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