Final answer:
To write tanh x in terms of sinh x and cosh x, use the identity tanh x = sinh x / cosh x. Substitute the definitions of sinh x and cosh x to obtain tanh x = (e^x - e^(-x)) / (e^x + e^(-x)).
Step-by-step explanation:
To write tanh x in terms of sinh x and cosh x, we can use the following identities:
tanh x = sinh x / cosh x
Using the definitions of sinh x and cosh x, we have:
tanh x = (e^x - e^(-x)) / (e^x + e^(-x))
Therefore, tanh x can be expressed in terms of sinh x and cosh x as tanh x = sinh x / cosh x = (e^x - e^(-x)) / (e^x + e^(-x)).