Since the function f(x) is a result of composing two
functions, w'ell have to use the chain rule to find out the derivative of
f(x).
f(x) = u(v(x))
f'(x) =
u'(v(x))*v'(x)
Let u(v(x)) = ln(+ 1 ) and v(x) =
+ 1
f'(x) = [ln( + 1)]'*(
+
1)'
f'(x) = [1/( + 1)]*(3
)
The requested derivative of the given
function is f'(x) = 3 /(
+ 1).
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