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WTF with my calc

  1. May 6, 2008 #1

    again as usual, i unfortunally have another question about the ti-89 titanum
    when i insert (x^2)^2 i get x^4 (due to the power law in expoents) but when i insert (x^2)^y i get the same answer back, (x^2)^y. what i think the answer should be is x^2y but i donno whats wrong.

    Please try on your own calculators and reply results

    thanks again
  2. jcsd
  3. May 7, 2008 #2
    Even mathematica does it.
    Perhaps it has something to do with the calculator not knowing if x or y belong to the real or complex set.
  4. May 7, 2008 #3
    so.. ur saying my cal is fked up?
  5. May 7, 2008 #4


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    Staff Emeritus
    Science Advisor
    Gold Member

    No, K.J.Healey is saying the calculator cannot simplify your expression further unless you tell it more about what x and y are.

    - Warren
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