4. (20%) Analyze and sketch the graph of $f(x) = \frac{2(x^2 - 9)}{x^2 - 4}$. (Label the intercepts, the coordinates of any local and absolute extreme points, inflection points, and asymptotes if any.)
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4. (20%) Analyze and sketch the graph of $f(x) = \frac{2(x^2 - 9)}{x^2 - 4}$. (Label the intercepts, the coordinates of any local and absolute extreme points, inflection points, and asymptotes if any.)