The hyperbolic cosine function, designated by cosh x is defined as cosh x = (1/2) (e^x + e^(-x)). Show that f(x) = cosh x is an even number.
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An even funtion satisfies In the same fashion of your other problem (odd hyperbolic sin function), do it.
Originally Posted by magentarita The hyperbolic cosine function, designated by cosh x is defined as cosh x = (1/2) (e^x + e^(-x)). Show that f(x) = cosh x is an even number. That is NOT what the questions asks because it makes no sense. cosh x is an even FUNCTION not an even number.
Originally Posted by Krizalid An even funtion satisfies In the same fashion of your other problem (odd hyperbolic sin function), do it. Are you saying to replace x with -x in the given function and simplify?
Originally Posted by HallsofIvy That is NOT what the questions asks because it makes no sense. cosh x is an even FUNCTION not an even number. What is the correct method for solving this question?
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