Page 2: Composite Exponential Functions and Graphical Representations
This page delves into composite exponential functions and their graphical representations, focusing on functions of the form fx = e^ax+b, where a and b are constants.
Definition: A composite exponential function is formed by composing the exponential function with an affine function, resulting in the general form fx = e^ax+b.
The derivative of such a composite function is given by:
f'x = a * e^ax+b
This formula is derived using the chain rule of differentiation.
Example: For the function fx = e^2x+1, its derivative is f'x = 2e^2x+1.
The page includes graphical representations of various exponential functions, illustrating how changes in the parameters a and b affect the shape and position of the graph.
Highlight: The parameter 'a' in e^ax+b affects the steepness of the curve, while 'b' shifts the function vertically.
The graph also shows the function e^−0.5x, demonstrating how negative values of 'a' result in a decreasing exponential function.
These composite exponential functions are important in modeling various real-world phenomena, such as population growth, radioactive decay, and compound interest.
Vocabulary: Domaine de définition (Domain of definition) for exponential functions is all real numbers, which is one of their distinguishing features.
Understanding these composite forms and their graphs is crucial for solving more complex équations exponentielles (exponential equations) and inéquations exponentielles (exponential inequalities) in advanced mathematics courses.