the function of f is f(x)= ln(e^x + e^-x) using composite and quotient rules give an expression for f ' (x) and f ''(x) im confused about these rules....isnt f ' (x) just 1/e^x + e ^-x)????
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does that mean that f ' (x) using the rules is therefore
(e^x - e ^-x)^2
No. The answer is given above.
The most compact form is
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