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#1 Re: Help Me ! » Real Analysis Help » 2009-03-07 04:25:52

Here:     (e^2x + e^-2x )/2 
          = (2e^2x + 2e^-2x)/4
          = (e^2x + 2 + e^-2x + e^2x– 2 + e^-2x)/4

You finish it.

#2 Re: Help Me ! » eeg » 2009-03-06 07:58:16

I am not sure either what you mean by "full form".  Only thing that comes to my mind is  Electroencephalogram, as Devante suggested.  It can also stand for Electroencephalography.

#3 Re: Help Me ! » Real Analysis Help » 2009-03-06 07:48:15

Just use the definitions of the two that you provided. 

For part c I'll give you a hint that;

sinh(2x) = 2sinh(x)cosh(x)
cosh(2x) = cosh^2(x) + sinh^2(x)

Again use the definition of cosh(x) and sinh(x) and manipulate the numbers to get their identities.

#4 Re: Help Me ! » Number Pattern » 2009-03-06 07:34:00

European currency has 20 cent coin as well as a 2 cent in addition to the ones you have listed.  Since 2 is not in the list, I suggest its 25 cents.

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