Funzioni Goniometriche e Tecniche di Scomposizione
This page delves into trigonometric functions and decomposition techniques, essential for solving limits involving funzioni goniometriche esercizi svolti.
The document presents key trigonometric identities, such as cos²x + sen²x = 1, which are fundamental in simplifying complex trigonometric expressions. It also introduces strategies for handling limits of trigonometric functions.
Vocabulary: "Scompongo" means "I decompose" in Italian, referring to the process of breaking down complex expressions into simpler forms.
The page outlines several algebraic identities useful for decomposition:
- A² - B² = A−BA+B
- A² + 2AB + B² = A±B²
- ax² + bx + c = ax−x1x−x2
These identities are crucial for simplifying expressions and solving limits that appear indeterminate at first glance.
Example: The identity cos²x + sen²x = 1 can be rearranged to express cos²x or sen²x in terms of the other, which is often useful in limit calculations.
The document also addresses limits involving square roots, providing a technique called "razionalizzazione" rationalization to handle such cases.
Highlight: The ability to recognize and apply these decomposition techniques and trigonometric identities is key to solving complex limit problems, especially those involving limiti funzioni goniometriche.