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The natural logarithm function, denoted as ln x, is the inverse of the exponential function e^x. It gives us the power we need to raise Euler's number (e) to obtain x.
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Logarithmic Function: A function that represents the exponent or power to which a base must be raised to obtain a given value.
Base e: Euler's number, approximately 2.71828, which serves as the base for natural logarithms.
Exponential Equations: Equations where variables appear in exponents, such as solving for x in equations like 2^x = 8.