Page 3: Polynomial Equations with Parameters and Special Cases
This final page focuses on równania wielomianowe z parametrem (polynomial equations with parameters) and explores special cases and advanced problem-solving techniques.
The page begins with a complex equation involving both cubic and quadratic terms: ¼x³ - 81 = x² + 2x + 4. It demonstrates how to rearrange and solve such equations step by step.
Example: ¼x³ - 81 = x² + 2x + 4 is transformed into ¼x³ - x² - 2x - 85 = 0, which can be solved using factoring and the rational root theorem.
Next, it introduces equations with parameters, where certain coefficients are represented by variables.
Highlight: Understanding how parameters affect the solutions of polynomial equations is crucial for advanced problem-solving in algebra.
The document then covers the general form of quadratic equations f(x) = ax² + bx + c, and how to analyze them when a, b, and c are parameters.
Vocabulary: "Wielomiany zadania maturalne" refers to "polynomial problems in matriculation exams", indicating the importance of this topic in advanced mathematics education.
Several problems demonstrate how to solve and analyze equations where the coefficients contain parameters.
Example: (10x + 10)(x² + (m+2)x + (m-1)²) = 0 is analyzed for different values of the parameter m to determine the nature and number of solutions.
The page concludes with a discussion on the relationship between the discriminant and the nature of roots in parametric equations.
Definition: The discriminant of a quadratic equation ax² + bx + c = 0 is given by b² - 4ac. Its value determines the nature of the roots (real and distinct, real and equal, or complex).