Hyperbolic Functions

May 2010
5
0
I'm having an issue with Hyperbolic Functions!
I have read through examples on proving hyperbolic identities here but I am struggling to relate it to this equation:

cosh2x=2cosh^2x-1

i know coshx = (e^x+e^-x)/2

I'm also a little weak on exponentional and logarithm (Worried)

cheers
 

dwsmith

MHF Hall of Honor
Mar 2010
3,093
582
Florida
I'm having an issue with Hyperbolic Functions!
I have read through examples on proving hyperbolic identities here but I am struggling to relate it to this equation:

cosh2x=2cosh^2x-1

i know coshx = (e^x+e^-x)/2

I'm also a little weak on exponentional and logarithm (Worried)

cheers
Try starting on the RHS and simplifying until you arrive at the LHS
 
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