Detailed Solutions for Function Family Analysis
This page provides detailed solutions for the exercises introduced on the previous page. It focuses on the first exercise, which involves analyzing the function family f(x) = x² - (a + 1)x + a.
The solution process is broken down into several steps:
- Calculating the first and second derivatives of the function
- Finding the roots of the function using the quadratic formula
- Determining the extrema of the function
Vocabulary: The quadratic formula is used to find the roots of a quadratic equation in the form ax² + bx + c = 0.
The solution demonstrates how to apply the quadratic formula to find the roots of the function:
x = (a + 1) ± √((a + 1)² - 4a) / 2
Highlight: Understanding how to find roots and extrema is crucial for analyzing the behavior of Funktionsscharen.
The page also includes a reminder about binomial formulas, which are useful in simplifying algebraic expressions encountered in these types of problems.
Example: The binomial formula (a + b)² = a² + 2ab + b² is used in simplifying expressions derived from the quadratic formula.
This detailed approach helps students understand the step-by-step process of analyzing function families and prepares them for more complex problems.