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gerryliyana Group Title

Help

  • one year ago
  • one year ago

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  1. lillybeth123 Group Title
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    huh?

    • one year ago
  2. abb0t Group Title
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    Is this a medical emergency? If so, please call your local emergency number.

    • one year ago
  3. gerryliyana Group Title
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    it's math emergency

    • one year ago
  4. lillybeth123 Group Title
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    wats ur question?

    • one year ago
  5. gerryliyana Group Title
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    These are the pictures that I've uploaded for my question

    • one year ago
  6. lillybeth123 Group Title
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    oh glob, sorry i cant help, thats too hard, bye. :)

    • one year ago
  7. abb0t Group Title
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    I vaguely remember doing this, but I think you want to use the exponential form of cosh and sinh to prove it.

    • one year ago
  8. cblrtopas Group Title
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    Yeah, noob google series expansion of hyperbolic cosine and sine

    • one year ago
  9. cblrtopas Group Title
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    So sin z is equal to some summation. You multiply it by i. Work out a few terms in the summation making sure to remember that i^2=-1 and try to simplify it to look like the sinh z formula.

    • one year ago
  10. gerryliyana Group Title
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    how about first one??

    • one year ago
  11. gerryliyana Group Title
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    For -1 < p < 1 prove that \[\sum_{n=0 }^{\infty} p^{n}\cos nx =\frac{ 1= pcos x }{ 1-2pcosx + p^2 }\]

    • one year ago
  12. cblrtopas Group Title
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    bleh too much effort

    • one year ago
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spraguer (Moderator)
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is replying to Can someone tell me what button the professor is hitting...

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