1 Find the numerical value of each expression. (Round your answers to five decimal places.)
(a)
sinh(0)
(b)
cosh(0)
2
Find the numerical value of each expression. (Round your answers to five decimal places.)
(a)
tanh(0)
(b)
tanh(1)
3 Find the numerical value of each expression. (Round your answers to five decimal places.)
(a)
cosh(3)
(b)
cosh(ln(3))
4Find the numerical value of each expression. (Round your answers to five decimal places.)
(a)
sinh(1)
(b)
sinh^{−1}(1)
5Prove the identity.
cosh(−x) = cosh(x)
(This shows that cosh is an even function.)
cosh(−x)  = 


= 


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