The hyperbolic cosine and hyperbolic sine functions aredefined bycosh x = ex + e-x2 and
Chapter 4, Problem 93(choose chapter or problem)
The hyperbolic cosine and hyperbolic sine functions aredefined bycosh x = ex + e-x2 and sinh x = ex - e-x2 .a. Show that cosh x is an even function.b. Show that sinh x is an odd function.c. Prove that (cosh x)2 - (sinh x)2 = 1.
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