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Partial fractions

  1. May 6, 2008 #1
    1. The problem statement, all variables and given/known data

    we have 4/((s^2) + 4)(s-1)(s+3)

    2. Relevant equations



    3. The attempt at a solution

    dividing it up do we get:

    A/((s^2) + 4) + B/(s-1) + C/(s+3) = 4

    or is it

    (As + B)/((s^2) + 4) + C/(s-1) + D/(s+3) = 4
     
  2. jcsd
  3. May 6, 2008 #2

    HallsofIvy

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    Staff Emeritus
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    The second one. Since the denominator s2+ 4 is quadratic the numerator may be As+ B.
     
  4. May 6, 2008 #3
    cheers!
     
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