Inequalities and Vectors
This page continues with inequalities and introduces the concept of vectors.
Highlight: The page demonstrates how to solve more complex inequalities and begins to explore vector problems.
An example of a more complex inequality is provided:
Example: (3x - 9)(1 - 2x) > 0 is solved by considering the intervals where the expression is positive.
The page then transitions to vector problems, focusing on parallelograms.
Definition: Vectors are quantities that have both magnitude and direction, often represented by arrows in geometry.
A problem involving finding the coordinates of a point to form a parallelogram is presented:
Example: Given points A(1,5), B(-2,1), and C(4,4), find the coordinates of D to form parallelogram ABCD.
The solution demonstrates how to use vector properties to solve geometric problems.
Vocabulary: Parallélogramme (Parallelogram) - A quadrilateral with opposite sides parallel and equal in length.