Page 2: Properties of Absolute Values and Distance on the Number Line

This page delves deeper into the properties of absolute values and their relationship to distances on the number line.

The midpoint of a line segment defined by points with coordinates a and b on the number line is a point whose coordinate is equal to the arithmetic mean of a and b, i.e., $a+b$/2.

Definition: The distance between two points a and b on the number line is equal to |a - b|.

The page provides examples of finding points equidistant from two given numbers on the number line:

Example: Find a number c that is equidistant from a = -2 and b = 4. Solution: c = $-2 + 4$/2 = 1

It also demonstrates how to represent intervals on the number line using absolute value notation:

Example: Represent all real numbers whose distance from 1 on the number line is less than or equal to 5. Solution: |x - 1| ≤ 5, which corresponds to the interval $-4, 6$ on the number line.

Highlight: The absolute value of a real number x is equal to the distance of that number from zero on the number line.

Page 3: Solving Equations with Absolute Values

This page focuses on solving equations involving absolute values. It introduces a key property for solving such equations:

Definition: For any real number a > 0 and any expression W: |W| = a ⇔ $W = a ∨ W = -a$

This property is then applied to solve various equations:

Example: Solve |x| = -2 Solution: This equation has no solution as the absolute value is always non-negative.

Example: Solve |3 - x| = 0 Solution: 3 - x = 0, so x = 3

The page also covers more complex equations with absolute values:

Example: Solve |4 + x| = 5 Solution: 4 + x = 5 or 4 + x = -5, so x = 1 or x = -9

These examples demonstrate the process of rozwiązywanie nierówności zadania involving absolute values.

Page 4: Solving Inequalities with Absolute Values

This page introduces techniques for solving inequalities involving absolute values. It presents key properties for different types of inequalities:

Definition: For any real number a > 0 and any expression W:

• |W| < a ⇔ -a < W < a
• |W| ≤ a ⇔ -a ≤ W ≤ a
• |W| > a ⇔ $W < -a ∨ W > a$
• |W| ≥ a ⇔ $W ≤ -a ∨ W ≥ a$

These properties are then applied to solve various inequalities:

Example: Solve |x - a| < r Solution: a - r < x < a + r

Example: Solve |5 + x| > 2 Solution: x < -7 or x > -3

The page emphasizes the importance of considering two cases when solving inequalities with absolute values, demonstrating key techniques for rozwiązywanie nierówności kwadratowych.

Page 5: Advanced Problems and Applications

This page presents a series of more advanced problems involving absolute values, demonstrating their application in various mathematical contexts.

It includes problems on calculating expressions with absolute values and square roots:

Example: Calculate |2 - √5| - |-2 + √5| - |5 - 2√5|

The page also features problems that involve evaluating whether the result of a calculation is rational or irrational:

Example: Calculate |3 - π| - |π - 3| and determine if the result is rational or irrational. Solution: The result is 0, which is rational.

More complex problems involve simplifying expressions with absolute values and square roots:

Example: Calculate |3√5 - 2√125 + 10| - |7√5 - 10| Solution: This problem requires careful manipulation of square roots and results in 845 - 140√5.

The page concludes with examples of rewriting expressions without using the absolute value symbol and representing distances on the number line using absolute value notation.

Highlight: These advanced problems demonstrate the versatility of absolute values in solving complex mathematical expressions and inequalities.

Page 6: Additional Practice Problems

This page provides a comprehensive set of practice problems covering various aspects of absolute values, equations, and inequalities.

The problems include:

1. Calculating expressions involving absolute values and square roots.
2. Solving equations with absolute values.
3. Representing intervals on the number line using absolute value notation.
4. Simplifying complex expressions involving logarithms and absolute values.

Example: Solve the equation |x| - 3 = -3 Solution: This equation has no solution as |x| ≥ 0 for all real x.

Example: Express the following statement using absolute value notation: "The distance between the number k and -1 is not greater than 5" Solution: |k + 1| ≤ 5

These practice problems provide excellent opportunities for students to apply their knowledge of równania i nierówności zadania 1 liceum and wartość bezwzględna zadania.

Page 7: Advanced Techniques and Applications

The final page delves into more advanced techniques and applications of absolute values in mathematical problem-solving.

It includes problems that combine absolute values with other mathematical concepts such as logarithms and complex algebraic expressions:

Example: Calculate $1 + log₁₉(15 + 83)$ - |-2|₀.₂₄(3)⁻² |

The page also features problems that require a deep understanding of the properties of absolute values and their interaction with other mathematical operations:

Example: Solve the equation 3|x| + √|x| = 5| - 2

These advanced problems demonstrate the importance of a solid foundation in własności wartości bezwzględnej and their applications in complex mathematical scenarios.

Highlight: The problems on this page challenge students to apply their knowledge of absolute values in conjunction with other mathematical concepts, preparing them for advanced mathematical reasoning.

Page 1: Introduction to Absolute Values and Basic Calculations

This page introduces the concept of absolute values and provides examples of basic calculations involving them.

The absolute value of a real number is defined as its distance from zero on the number line. For instance, |-1| = 1 and |1 - π| = π - 1.

Several examples are provided to illustrate calculations with absolute values:

Example: Calculate the value of |3 - | - 1 - 3 | - 3 + | √3 - 3 || Solution: |-3 + 9 - 2 + 3| = 0

Example: Calculate the value of $|√45 - 4√3 - √27 - √108| + 1$$1 + 2√3$ Solution: This complex calculation involves simplifying square roots and results in -11.

The page also includes examples of solving equations with absolute values and calculating expressions with square roots.

Vocabulary: Absolute value $wartość bezwzględna$ - The non-negative value of a real number without regard to its sign.