Use L'Hopital's Rule to Evaluate the Limit $\lim _ { x \rightarrow 0 } \frac { \cos 9 x - 1 } { x ^ { 2 } }$

question 409

Multiple Choice

Use l'Hopital's Rule to evaluate the limit.
- $\lim _ { x \rightarrow 0 } \frac { \cos 9 x - 1 } { x ^ { 2 } }$

• A) \(\frac { 9 } { 2 }\)
• B) \(- \frac { 81 } { 2 }\)
• C) \(\frac { 81 } { 2 }\)
• D) 0

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