Exponents Linear algebra












0












$begingroup$


$x^y=z $



Proof that



$x^n/z=y$



I was calculating the cube root of $2$ by hand and when checking it out, I noticed its square is close to the value of logarithm of $3$ in base $2$. A little tweaking and I got the exact value for $n$ when $z$ is set at $3$. I wonder if there is detailed proof of such operations. Thanks.










share|cite|improve this question











$endgroup$








  • 1




    $begingroup$
    What is n in this case?
    $endgroup$
    – Gnumbertester
    Jan 29 at 21:30










  • $begingroup$
    n/z = 1.99334613/3
    $endgroup$
    – Adam Boit
    Jan 29 at 22:39










  • $begingroup$
    What do $n$ and $z$ actually represent though?
    $endgroup$
    – Gnumbertester
    Jan 29 at 22:46












  • $begingroup$
    n and z is fractional exponent where the index of the root just happens to equal the number we get when we make y the new exponent.
    $endgroup$
    – Adam Boit
    Jan 30 at 5:12
















0












$begingroup$


$x^y=z $



Proof that



$x^n/z=y$



I was calculating the cube root of $2$ by hand and when checking it out, I noticed its square is close to the value of logarithm of $3$ in base $2$. A little tweaking and I got the exact value for $n$ when $z$ is set at $3$. I wonder if there is detailed proof of such operations. Thanks.










share|cite|improve this question











$endgroup$








  • 1




    $begingroup$
    What is n in this case?
    $endgroup$
    – Gnumbertester
    Jan 29 at 21:30










  • $begingroup$
    n/z = 1.99334613/3
    $endgroup$
    – Adam Boit
    Jan 29 at 22:39










  • $begingroup$
    What do $n$ and $z$ actually represent though?
    $endgroup$
    – Gnumbertester
    Jan 29 at 22:46












  • $begingroup$
    n and z is fractional exponent where the index of the root just happens to equal the number we get when we make y the new exponent.
    $endgroup$
    – Adam Boit
    Jan 30 at 5:12














0












0








0





$begingroup$


$x^y=z $



Proof that



$x^n/z=y$



I was calculating the cube root of $2$ by hand and when checking it out, I noticed its square is close to the value of logarithm of $3$ in base $2$. A little tweaking and I got the exact value for $n$ when $z$ is set at $3$. I wonder if there is detailed proof of such operations. Thanks.










share|cite|improve this question











$endgroup$




$x^y=z $



Proof that



$x^n/z=y$



I was calculating the cube root of $2$ by hand and when checking it out, I noticed its square is close to the value of logarithm of $3$ in base $2$. A little tweaking and I got the exact value for $n$ when $z$ is set at $3$. I wonder if there is detailed proof of such operations. Thanks.







logarithms






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share|cite|improve this question













share|cite|improve this question




share|cite|improve this question








edited Jan 29 at 21:29









abc...

3,237739




3,237739










asked Jan 29 at 21:23









Adam BoitAdam Boit

164




164








  • 1




    $begingroup$
    What is n in this case?
    $endgroup$
    – Gnumbertester
    Jan 29 at 21:30










  • $begingroup$
    n/z = 1.99334613/3
    $endgroup$
    – Adam Boit
    Jan 29 at 22:39










  • $begingroup$
    What do $n$ and $z$ actually represent though?
    $endgroup$
    – Gnumbertester
    Jan 29 at 22:46












  • $begingroup$
    n and z is fractional exponent where the index of the root just happens to equal the number we get when we make y the new exponent.
    $endgroup$
    – Adam Boit
    Jan 30 at 5:12














  • 1




    $begingroup$
    What is n in this case?
    $endgroup$
    – Gnumbertester
    Jan 29 at 21:30










  • $begingroup$
    n/z = 1.99334613/3
    $endgroup$
    – Adam Boit
    Jan 29 at 22:39










  • $begingroup$
    What do $n$ and $z$ actually represent though?
    $endgroup$
    – Gnumbertester
    Jan 29 at 22:46












  • $begingroup$
    n and z is fractional exponent where the index of the root just happens to equal the number we get when we make y the new exponent.
    $endgroup$
    – Adam Boit
    Jan 30 at 5:12








1




1




$begingroup$
What is n in this case?
$endgroup$
– Gnumbertester
Jan 29 at 21:30




$begingroup$
What is n in this case?
$endgroup$
– Gnumbertester
Jan 29 at 21:30












$begingroup$
n/z = 1.99334613/3
$endgroup$
– Adam Boit
Jan 29 at 22:39




$begingroup$
n/z = 1.99334613/3
$endgroup$
– Adam Boit
Jan 29 at 22:39












$begingroup$
What do $n$ and $z$ actually represent though?
$endgroup$
– Gnumbertester
Jan 29 at 22:46






$begingroup$
What do $n$ and $z$ actually represent though?
$endgroup$
– Gnumbertester
Jan 29 at 22:46














$begingroup$
n and z is fractional exponent where the index of the root just happens to equal the number we get when we make y the new exponent.
$endgroup$
– Adam Boit
Jan 30 at 5:12




$begingroup$
n and z is fractional exponent where the index of the root just happens to equal the number we get when we make y the new exponent.
$endgroup$
– Adam Boit
Jan 30 at 5:12










2 Answers
2






active

oldest

votes


















1












$begingroup$

Adding to abc..., note that:
$$log_b{x}=y Rightarrow b^y=x$$



You're saying:
$$2^{frac{2}{3}}approxlog_2{3}$$



If we break this into the components of a logarithm, we have:
$b=2$, $y=frac{2}{3}$, and $x=3$.



That would imply that $2^{frac{2}{3}}=3$ by our definition of a logarithm.



Clearly, this is a contradiction though as $2^{frac{2}{3}}approx1.5874$. Therefore, this is just an interesting coincidence, not consequence of any "rule".






share|cite|improve this answer









$endgroup$













  • $begingroup$
    Thank you a lot. I have had this sudden craze in maths and I keep bumping on some numbers now and then. I'll share more.
    $endgroup$
    – Adam Boit
    Jan 29 at 22:48










  • $begingroup$
    Glad I could help. I am going through the same thing, experimental math is fascinating.
    $endgroup$
    – Gnumbertester
    Jan 29 at 23:15



















0












$begingroup$

To me it's a coincidence.



$log_2 3-2^{frac{2}{3}}=0.002438551247043293297966695324491751631678920207371949352$






share|cite|improve this answer









$endgroup$














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    2 Answers
    2






    active

    oldest

    votes








    2 Answers
    2






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    1












    $begingroup$

    Adding to abc..., note that:
    $$log_b{x}=y Rightarrow b^y=x$$



    You're saying:
    $$2^{frac{2}{3}}approxlog_2{3}$$



    If we break this into the components of a logarithm, we have:
    $b=2$, $y=frac{2}{3}$, and $x=3$.



    That would imply that $2^{frac{2}{3}}=3$ by our definition of a logarithm.



    Clearly, this is a contradiction though as $2^{frac{2}{3}}approx1.5874$. Therefore, this is just an interesting coincidence, not consequence of any "rule".






    share|cite|improve this answer









    $endgroup$













    • $begingroup$
      Thank you a lot. I have had this sudden craze in maths and I keep bumping on some numbers now and then. I'll share more.
      $endgroup$
      – Adam Boit
      Jan 29 at 22:48










    • $begingroup$
      Glad I could help. I am going through the same thing, experimental math is fascinating.
      $endgroup$
      – Gnumbertester
      Jan 29 at 23:15
















    1












    $begingroup$

    Adding to abc..., note that:
    $$log_b{x}=y Rightarrow b^y=x$$



    You're saying:
    $$2^{frac{2}{3}}approxlog_2{3}$$



    If we break this into the components of a logarithm, we have:
    $b=2$, $y=frac{2}{3}$, and $x=3$.



    That would imply that $2^{frac{2}{3}}=3$ by our definition of a logarithm.



    Clearly, this is a contradiction though as $2^{frac{2}{3}}approx1.5874$. Therefore, this is just an interesting coincidence, not consequence of any "rule".






    share|cite|improve this answer









    $endgroup$













    • $begingroup$
      Thank you a lot. I have had this sudden craze in maths and I keep bumping on some numbers now and then. I'll share more.
      $endgroup$
      – Adam Boit
      Jan 29 at 22:48










    • $begingroup$
      Glad I could help. I am going through the same thing, experimental math is fascinating.
      $endgroup$
      – Gnumbertester
      Jan 29 at 23:15














    1












    1








    1





    $begingroup$

    Adding to abc..., note that:
    $$log_b{x}=y Rightarrow b^y=x$$



    You're saying:
    $$2^{frac{2}{3}}approxlog_2{3}$$



    If we break this into the components of a logarithm, we have:
    $b=2$, $y=frac{2}{3}$, and $x=3$.



    That would imply that $2^{frac{2}{3}}=3$ by our definition of a logarithm.



    Clearly, this is a contradiction though as $2^{frac{2}{3}}approx1.5874$. Therefore, this is just an interesting coincidence, not consequence of any "rule".






    share|cite|improve this answer









    $endgroup$



    Adding to abc..., note that:
    $$log_b{x}=y Rightarrow b^y=x$$



    You're saying:
    $$2^{frac{2}{3}}approxlog_2{3}$$



    If we break this into the components of a logarithm, we have:
    $b=2$, $y=frac{2}{3}$, and $x=3$.



    That would imply that $2^{frac{2}{3}}=3$ by our definition of a logarithm.



    Clearly, this is a contradiction though as $2^{frac{2}{3}}approx1.5874$. Therefore, this is just an interesting coincidence, not consequence of any "rule".







    share|cite|improve this answer












    share|cite|improve this answer



    share|cite|improve this answer










    answered Jan 29 at 21:45









    GnumbertesterGnumbertester

    6771114




    6771114












    • $begingroup$
      Thank you a lot. I have had this sudden craze in maths and I keep bumping on some numbers now and then. I'll share more.
      $endgroup$
      – Adam Boit
      Jan 29 at 22:48










    • $begingroup$
      Glad I could help. I am going through the same thing, experimental math is fascinating.
      $endgroup$
      – Gnumbertester
      Jan 29 at 23:15


















    • $begingroup$
      Thank you a lot. I have had this sudden craze in maths and I keep bumping on some numbers now and then. I'll share more.
      $endgroup$
      – Adam Boit
      Jan 29 at 22:48










    • $begingroup$
      Glad I could help. I am going through the same thing, experimental math is fascinating.
      $endgroup$
      – Gnumbertester
      Jan 29 at 23:15
















    $begingroup$
    Thank you a lot. I have had this sudden craze in maths and I keep bumping on some numbers now and then. I'll share more.
    $endgroup$
    – Adam Boit
    Jan 29 at 22:48




    $begingroup$
    Thank you a lot. I have had this sudden craze in maths and I keep bumping on some numbers now and then. I'll share more.
    $endgroup$
    – Adam Boit
    Jan 29 at 22:48












    $begingroup$
    Glad I could help. I am going through the same thing, experimental math is fascinating.
    $endgroup$
    – Gnumbertester
    Jan 29 at 23:15




    $begingroup$
    Glad I could help. I am going through the same thing, experimental math is fascinating.
    $endgroup$
    – Gnumbertester
    Jan 29 at 23:15











    0












    $begingroup$

    To me it's a coincidence.



    $log_2 3-2^{frac{2}{3}}=0.002438551247043293297966695324491751631678920207371949352$






    share|cite|improve this answer









    $endgroup$


















      0












      $begingroup$

      To me it's a coincidence.



      $log_2 3-2^{frac{2}{3}}=0.002438551247043293297966695324491751631678920207371949352$






      share|cite|improve this answer









      $endgroup$
















        0












        0








        0





        $begingroup$

        To me it's a coincidence.



        $log_2 3-2^{frac{2}{3}}=0.002438551247043293297966695324491751631678920207371949352$






        share|cite|improve this answer









        $endgroup$



        To me it's a coincidence.



        $log_2 3-2^{frac{2}{3}}=0.002438551247043293297966695324491751631678920207371949352$







        share|cite|improve this answer












        share|cite|improve this answer



        share|cite|improve this answer










        answered Jan 29 at 21:36









        abc...abc...

        3,237739




        3,237739






























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