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Sinh (2Lnx)

 Jul 24, 2016
 #1
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Solve for x over the real numbers:
sinh(2 log(x)) = 0

 

Take the inverse hyperbolic sine of both sides:
2 log(x) = 0

 

Divide both sides by 2:
log(x) = 0

 

Cancel logarithms by taking exp of both sides:
Answer: |x = 1

 Jul 24, 2016
 #2
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sinh(2ln x)

\(\dfrac{1}{2}(e^{2\ln x}-e^{-2\ln x})\)\(\text{<----By definition}\)

=\(\dfrac{(e^{\ln x})^{2}}{2}-\dfrac{1}{2(e^{\ln x})^{2}}\)

=\(\dfrac{x^2}{2}-\dfrac{1}{2x^2}\)

 Jul 26, 2016
edited by MaxWong  Jul 26, 2016

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