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Simplifying an expression

  1. May 28, 2013 #1


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    My basic math is failing me again :(

    My attempt to simply:

    My teacher's attempt:

    Ignore the difference in notation. He writes || which signifies (A x B) / (A + B) = A || B

    And yes I'm aware there is more to simplify but I fail to follow him on the first step
    Last edited by a moderator: May 6, 2017
  2. jcsd
  3. May 28, 2013 #2


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    I take it R, S and C are three separate variables.
    In ##\frac{\frac{R}{SC}}{R+\frac1{SC}}##, multiply top and bottom by SC.
  4. May 28, 2013 #3


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    Ahh...thank you, I should've seen it!
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