How to express ##3^{\sqrt(2)}## in terms of natural logarithms

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Discussion Overview

The discussion revolves around expressing the mathematical expression ##3^{\sqrt{2}}## in terms of natural logarithms, as posed in a calculus textbook. Participants explore various approaches and interpretations of the problem, which falls under the category of mathematical reasoning.

Discussion Character

  • Mathematical reasoning
  • Debate/contested

Main Points Raised

  • One participant states that ##3^{\sqrt{2}} = e^{\sqrt{2}\ln{3}}## but questions if this is fully in natural logarithm form.
  • Another participant suggests that ##3^{\sqrt{2}} = e^{2\ln{3}}##, but this is also questioned regarding its completeness.
  • There is a proposal that ##\ln(3^{\sqrt{2}}) = \sqrt{2}\ln(3)##, but some participants argue that this does not fulfill the requirement of expressing the original expression in natural logarithm form.
  • One participant suggests rewriting ##x=3^{\sqrt{2}}## and transforming it via logarithm and exponentiation.
  • A later reply mentions that ##\ln \exp(3^{\sqrt{2}})## might be a valid approach.
  • Some participants express that the question seems underspecified and request additional examples to clarify the expectations.
  • Another participant proposes applying the same transformation to ##\sqrt{2}## as was done to 3.
  • One participant states that ##\log_3 x = \log_3(3^{\sqrt{2}}) = \sqrt{2}##, presenting a different perspective.

Areas of Agreement / Disagreement

Participants express differing views on how to properly express ##3^{\sqrt{2}}## in terms of natural logarithms, with no consensus reached on a definitive method or solution. The discussion remains unresolved regarding the correct approach.

Contextual Notes

Participants note that the original question may lack sufficient detail, and there are unresolved assumptions about what constitutes a complete answer in natural logarithm form.

MevsEinstein
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TL;DR
What the title says
So in my Calculus book, it asked a question in its Transcendental Functions chapter. It wanted me to express ##3^{\sqrt{2}}## in terms of natural logarithms I have no idea how to solve this. All I know is that ##3^{\sqrt{2}} = e^{\sqrt{2}\ln{3}}## but that's not completely in natural logarithm form.
 
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MevsEinstein said:
All I know is that ##3^{sqrt{2}} = e^{2*ln{3}}##
Are you sure?
MevsEinstein said:
but that's not completely in natural logarithm form.
Perhaps that form is what they want?
 
MevsEinstein said:
Summary:: What the title says

So in my Calculus book, it asked a question in its Transcendental Functions chapter. It wanted me to express ##3^{\sqrt{2}}## in terms of natural logarithms I have no idea how to solve this. All I know is that ##3^{\sqrt{2}} = e^{2\ln{3}}## but that's not completely in natural logarithm form.
You should correct your mistake, then write ##x=3^{\sqrt{2}}## and transform it via logarithm and exponentiation.
 
Maybe ##ln(3^{\sqrt{2}})=\sqrt{2}ln(3)?##
 
mathman said:
Maybe ##ln(3^{\sqrt{2}})=\sqrt{2}ln(3)?##
The question was to represent ##3^\sqrt{2}## as natural logarithms. ##\sqrt{2} \ln{3}## won't be the answer
 
MevsEinstein said:
The question was to represent ##3^\sqrt{2}## as natural logarithms. ##\sqrt{2} \ln{3}## won't be the answer
Again. Set ##x=3^{\sqrt{2}}## and rewrite it as ##x=e^{\ln x}## with appropriate changes on the right.
 
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## \ln \exp \left (3^{\sqrt{2}}\right) ## seems to do the trick
 
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I think this question is underspecified. Do you have some other examples with correct solutions so we can try to figure out what they're actually looking for?
 
Office_Shredder said:
I think this question is underspecified. Do you have some other examples with correct solutions so we can try to figure out what they're actually looking for?
The book didn't have any other examples.
 
  • #10
: maybe you're supposed to do the same thing to the ##\sqrt{2}## that you did to the 3?
 
  • #11
Or simply: ##\log_3 x= \log_3 \left(3^{\sqrt{2}}\right)=\sqrt{2}##.
 

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