Here are the essential concepts you must grasp in order to answer the question correctly.
Exponential Functions
Exponential functions are mathematical expressions in the form f(x) = a * b^x, where 'a' is a constant, 'b' is the base (a positive real number), and 'x' is the exponent. The function f(x) = e^x is a specific case where the base 'e' (approximately 2.718) is used. These functions are characterized by their rapid growth or decay and have unique properties such as a horizontal asymptote.
Recommended video:
Transformations of Functions
Transformations of functions involve shifting, reflecting, stretching, or compressing the graph of a function. Common transformations include vertical shifts (adding or subtracting a constant), horizontal shifts (adding or subtracting from the input), and reflections (flipping the graph over an axis). For the function g(x) = e^(x) - 1, the graph of f(x) = e^x is shifted down by 1 unit, affecting its asymptote and range.
Recommended video:
Domain & Range of Transformed Functions
Asymptotes
Asymptotes are lines that a graph approaches but never touches or crosses. For exponential functions, the horizontal asymptote is typically found at y = k, where k is a constant that represents the vertical shift of the function. In the case of g(x) = e^x - 1, the horizontal asymptote is y = -1, indicating that as x approaches negative infinity, the function approaches this line.
Recommended video:
Introduction to Asymptotes