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OpenStudy (z4k4r1y4):
Solve for x: 2cosh(x)=0
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OpenStudy (z4k4r1y4):
cosh(x)=1/2(e^x+e^-x)
OpenStudy (z4k4r1y4):
so 2coshx= e^x+e^-x which = 0
OpenStudy (mathmate):
and \(e^x >0~~\forall x\in R\) so there is no real root.
OpenStudy (z4k4r1y4):
exactly the answer I got!
OpenStudy (z4k4r1y4):
thank you for verifying.
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