Question

1- Find the numerical value of each expression. (Round your answers to five decimal places.) (a)    ...

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))

4-Find the numerical value of each expression. (Round your answers to five decimal places.)

(a)    

sinh(1)




(b)    

sinh−1(1)

5-Prove the identity.

cosh(−x) = cosh(x)


(This shows that cosh is an even function.)

cosh(−x) =
1
2
  + e−(−x)
=
1
2
  + ex
=

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