Composite functions and notation
Let ƒ(x)= x² - 4 , g(x) = x³ and F(x) = 1/(x-3).
Simplify or evaluate the following expressions.
F(F(x))

검증된 단계별 안내

Identify the function F(x) which is given as F(x) = \(\frac{1}{x-3}\).

To find F(F(x)), substitute F(x) into itself. This means replacing x in F(x) with F(x).

Substitute F(x) = \(\frac{1}{x-3}\) into F(x) to get F(F(x)) = \(\frac{1}{\frac{1}{x-3}\) - 3}.

Simplify the expression \(\frac{1}{\frac{1}{x-3}\) - 3} by finding a common denominator for the terms in the denominator.

The common denominator is x-3, so rewrite the expression as \(\frac{1}{\frac{1 - 3(x-3)}{x-3}\)} and simplify further.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

도움이 되었나요?

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Composite Functions

Composite functions are formed when one function is applied to the result of another function. In this case, F(F(x)) means that we first evaluate F at x, and then take that result and use it as the input for F again. Understanding how to combine functions is crucial for simplifying expressions involving multiple functions.

Function Notation

Function notation is a way to denote functions and their operations clearly. For example, F(x) represents the function F evaluated at x. Recognizing how to read and interpret function notation is essential for working with composite functions and understanding the relationships between different functions.

Simplification of Expressions

Simplification involves reducing an expression to its simplest form, making it easier to work with. This can include combining like terms, factoring, or substituting values. In the context of composite functions, simplifying F(F(x)) requires substituting the expression for F(x) into itself and then simplifying the resulting expression.

Composite functions and notationLet ƒ(x)= x² - 4 , g(x) = x³ and F(x) = 1/(x-3).Simplify or evaluate the following expressions.F(F(x))