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Dose calculations in FA (b/c I'm a *******)

Discussion in 'Step I' started by Taus, Mar 23, 2007.

  1. Taus

    Taus .
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    OK..I'm a ******* and have a pretty basic question..

    On page 210 they have the formula for calculating loading dose as: Cp x Vd / f

    Is it (Cp x Vd) / f or Cp x (Vd/f) ?

    I remember the "PEMDAS" mnemonic from highschool and think its the first way w/ multiplying first....but I'd appreciate if someone could chime in on this.
     
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  3. surprisedgirl

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    i believe its the first
     
  4. domer621

    domer621 MS4

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    surprisedgirl is correct.
     
  5. Taus

    Taus .
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    hmm...taking a look at some practice questions Qbook has it the 2nd way and Katzung in the Lange Qbook has it the first way....wtf...
     
  6. surprisedgirl

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    i havent studied that stuff nor have i looke dat it since last year but im pretty sure thats how i remember it.....and that seems right anyway
     
  7. mountainman123

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    Yeah I remember trying to figure that out and they both give the same answer if you plug in fake numbers and solve (I think...... too lazy to do it right now)
     
  8. lord_jeebus

    lord_jeebus 和魂洋才
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  9. Taus

    Taus .
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  10. joe6102

    joe6102 by the power of grayskull

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    Yes.
     
  11. SeventhSon

    SeventhSon SIMMER DOWN

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    it so happens for that expression a x b / c the order of operations is irrelevant
     
  12. myershurt

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    exactly as above - mathematically speaking - multiplication and division can be used together in any order - just plug in random numbers and you will see that the dose comes out exactly the same no matter which operation you do first...
     

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