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Mathematics 26 Online
OpenStudy (anonymous):

Who loves hyperbolic function here ! I need help with proof So it's 2sinh^2 x+1 So what I did is 2times (e^x -e^-x/2) ^2 +1 From which I am getting (e^2x - e^-2x +2)/2 For a right answer I need this to be (e^2x +e^-2x)/ 2 Which I dunno how to get rid of +2 and make the operator positive ?

OpenStudy (perl):

what do you want to prove

OpenStudy (perl):

prove cosh2x = 2sinh^2 x+1 ?

OpenStudy (anonymous):

Yes cos(2x)

OpenStudy (anonymous):

@perl

OpenStudy (anonymous):

Can someone plz help me

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