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  4. If f(x) is continuous and f( (9/2) ) = (2/9) , then displaystyle limx → 0 f ( (1 - cos 3x/x2) ) is equal to :

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Q. If f(x) is continuous and $f\left( \frac{9}{2} \right) = \frac{2}{9}$ , then $\displaystyle\lim_{x \to 0} f \left( \frac{1 - \cos \, 3x}{x^2} \right)$ is equal to :

Limits and Derivatives

Solution:

Correct answer is (b) $\frac{2}{9}$