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giselle1398
giselle1398 giselle1398
  • 07-02-2017
  • Mathematics
Answered

numerical value of cosh(ln5)

Verified Answer :

LammettHash
LammettHash LammettHash
  • 08-02-2017

\(\cosh x=\dfrac{e^x+e^{-x}}2\)

So

\(\cosh(\ln 5)=\dfrac{e^{\ln5}+e^{-\ln5}}2=\dfrac{5+\frac15}2=\dfrac{13}5\)

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