Here are the essential concepts you must grasp in order to answer the question correctly.
Logarithmic Functions
Logarithmic functions, such as f(x) = ln x, are the inverses of exponential functions. They are defined for positive real numbers and have unique properties, including a vertical asymptote at x = 0. Understanding the basic shape and behavior of the natural logarithm is essential for analyzing transformations and their effects on the graph.
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Graphs of Logarithmic Functions
Transformations of Functions
Transformations of functions involve shifting, stretching, compressing, or reflecting the graph of a function. For example, the function g(x) = 2 ln x represents a vertical stretch of the graph of f(x) = ln x by a factor of 2. Recognizing how these transformations affect the graph's position and shape is crucial for accurately graphing the new function.
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Domain & Range of Transformed Functions
Asymptotes
Asymptotes are lines that a graph approaches but never touches. For logarithmic functions, there is typically a vertical asymptote at x = 0, indicating that the function is undefined for non-positive values. Identifying asymptotes helps in determining the domain and range of the function, which are essential for understanding its behavior and limits.
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