Graph the function f(x)=e^−x / x(x+2)^2 using a graphing utility. (Experiment with your choice of a graphing window.) Use your graph to determine the following limits.


b. lim x→−2 f(x)

Key Concepts

Limits

A limit is a fundamental concept in calculus that describes the behavior of a function as its input approaches a certain value. It helps in understanding the function's behavior near points of interest, including points of discontinuity or where the function may not be explicitly defined. Evaluating limits is crucial for determining the continuity and differentiability of functions.

Graphing Functions

Graphing functions involves plotting the values of a function on a coordinate system to visualize its behavior. This process can reveal important features such as intercepts, asymptotes, and intervals of increase or decrease. Using a graphing utility allows for experimentation with different viewing windows, which can help in identifying the limits and overall shape of the function.

Asymptotic Behavior

Asymptotic behavior refers to how a function behaves as it approaches a certain point, particularly at infinity or near points of discontinuity. In the context of limits, understanding asymptotic behavior is essential for determining the value of a limit as the input approaches a specific value, such as -2 in this case. It often involves analyzing the function's growth rates and identifying any vertical or horizontal asymptotes.