Page 1: Introduction to Quadratic Functions
This page introduces the concept of funkcja kwadratowa and its basic properties.
Key points:
- A quadratic function is defined as y=ax^2+bx+c, where a≠0
- The domain of a quadratic function is all real numbers
- The graph of a quadratic function is a parabola
- The parabola's orientation depends on the sign of 'a'
- The y-intercept of the parabola is at point 0,c
Definition: A funkcja kwadratowa is a function that can be expressed in the form y=ax^2+bx+c, where a, b, and c are real numbers and a≠0.
Highlight: The shape and orientation of the parabola are determined by the coefficient 'a'. When a>0, the parabola opens upward, and when a<0, it opens downward.
Example: In the function y=x^2-2√2x^2-8, we can identify a=1-2√2, b=0, and c=-8.
The page also introduces the canonical form of a quadratic function, y=ax−p^2+q, where p,q represents the vertex of the parabola.