Mathematics

Mathematics

Problem

Evaluate the validity of applying L’Hospital’s Rule to lim⁡x→0x2+1−1∣x∣\displaystyle \lim_{x\to0}\dfrac{\sqrt{x^{2}+1}-1}{|x|}. Which statement is most accurate? a) L’Hospital’s Rule cannot be applied because the limit is not of the form 0/00/0 or ∞/∞\infty/\infty. b) L’Hospital’s Rule can be applied because both functions are differentiable on an open interval containing 00 except possibly at 00, and ddx∣x∣≠0\dfrac{d}{dx}|x|\neq0 for x≠0x\neq0 in that interval. c) L’Hospital’s Rule can be applied solely because both numerator and denominator approach 00. d) L’Hospital’s Rule cannot be applied because ∣x∣|x| is not differentiable at x=0x=0.

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