APFIVE Derivative of a Composite Logarithmic Function
Let $$f$$ be the function defined by $$f(x)=\ln(\sqrt{x^2+1})$$. What is the value of $$f'(0)$$?
A
$$\frac{1}{2}$$
B
$$0$$
C
$$\frac{1}{(0^2+1)}$$
D
$$1$$
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