A Very Interesting Exponential Formula | Problem 376

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  • Опубліковано 4 лис 2024

КОМЕНТАРІ • 15

  • @scottleung9587
    @scottleung9587 Місяць тому +1

    Messy, but interesting!

  • @RuleofThehyperbolic
    @RuleofThehyperbolic Місяць тому +1

    now try to come up with a formula for
    (a+bi)^(c+di)=x+yi
    solve for x and y which are real numbers

  • @SweetSorrow777
    @SweetSorrow777 Місяць тому

    I would've rewritten the left-hand side as z^a*(z^bi). Then z^bi as cosb + i*sinb so z^a(cosb + i*sinb)
    Then z^a (cosb)+ z^a (sinb)= c+di
    z^a(cosb)=c and z^a(sinb)=d. Finding b should be a matter of setting sinb/cosb = d/c. I'm not sure how to go about finding a from here, though.😔

    • @decare696
      @decare696 Місяць тому

      your second step only works if z=e.

    • @SweetSorrow777
      @SweetSorrow777 Місяць тому

      @@decare696 You're right. I didn't catch that until hours later. Z^(bi) should be e^(bi*ln(z)).

  • @jarikosonen4079
    @jarikosonen4079 Місяць тому

    4:43 θ=arctan(d/c)+n2π ?
    But is it missing in the 9:19 solution?
    I hoped to see all of the solutions.
    Maybe if its should be arg(c,d) rather than arctan(d/c) if the arg(c,d) or arg(c+di) is considered as valid mathematical function....

  • @davinheagertans4275
    @davinheagertans4275 Місяць тому +1

    There's no way to clean that dirty fuzzball.

  • @Нукоротшестасяншодальше

    Wolfram alpha development jokes upon their users 😅

  • @lawrencejelsma8118
    @lawrencejelsma8118 Місяць тому +1

    Wolfram Alpha's result 😂🤣 It is like all the math teacher humans wanting an exact formula and a calculator or computing device resistance to absurdity in human demands giving back to the human only the real answers of doing an approximation in decimal numbers (at the most incorporating binary equivalent to human base 10 counting systems) using calculators or computer devices with no stunning exact formula insights. 😂🤣👍

  • @82rah
    @82rah Місяць тому +1

    Why don't you like WolframAlpha's solution? After all, it is correct.

  • @lawrencejelsma8118
    @lawrencejelsma8118 Місяць тому

    This was interesting since seeing your infinite power Z = i problem formed Z^i = i that doesn't seem as a strange I think I knew what is wrong but confused in my mind without other proof. Now I'm trying to digest your formula that doesn't match what you found days ago in an infinite tower Z = i Tower Power.
    Your derived a middle solution to today's formula now with a=0, b=1, c=0, d=1 and your Z solution becomes:
    Z = (0 + π/2 + i(0 + 1(0)) !?
    Z = π/2 is not e^π/2 ??
    I think that in today's formula we have an e^Z solution you came up with in the infinite power problem days ago. 🤔😑

    • @lawrencejelsma8118
      @lawrencejelsma8118 Місяць тому

      My bad! 😬😳 I wrote down Z = formula vs seeing the video again and knowing you were solving for ln(Z) 😑

  • @trojanleo123
    @trojanleo123 Місяць тому

    You did not express z in the form of x + yi

    • @aplusbi
      @aplusbi  Місяць тому

      Did I not? 🤪

  • @neuralwarp
    @neuralwarp Місяць тому

    Looks unwieldy. Let's invent a third notation for complex numbers that makes exponentiation simple.