Math Problem Statement

Determine the properties of the function f(x) = (√x - √a)^2, including its domain, range, limit as x approaches a, and whether it has an inverse.

Solution

The image you provided appears to contain mathematical notes in Arabic regarding functions and inverses. Let’s go through the key elements:

  1. Definition of the Function: The function f(x)=(xa)2f(x) = (\sqrt{x} - \sqrt{a})^2 is given. This expression represents the square of the difference between the square root of xx and the square root of a constant aa.

  2. Domain of the Function: It seems the domain DfD_f is under discussion. Typically, when dealing with square roots, the argument must be non-negative to keep the function real, so for f(x)f(x), the domain would include values of xx for which xa\sqrt{x} - \sqrt{a} is defined, likely implying x0x \geq 0.

  3. Limit of the Function: The notes appear to mention a limit expression: limxa+f(x)\lim_{x \to a^+} f(x) which likely evaluates the function's behavior as xx approaches aa from the right.

  4. Range of the Function: There is mention of the range I=[0,a]I = [0, \sqrt{a}], indicating the set of possible values for f(x)f(x), given its domain.

  5. Inverse Function: There is a note suggesting that ff has an inverse function, likely referring to finding f1f^{-1}, which maps the range of f(x)f(x) back to its domain.

Would you like a step-by-step solution for finding the inverse of this function or further clarification on any of these topics?


Here are five questions related to this topic:

  1. What steps are involved in finding the domain of a function involving square roots?
  2. How can we find the inverse of a quadratic function like f(x)=(xa)2f(x) = (\sqrt{x} - \sqrt{a})^2?
  3. What is the importance of calculating the limit of a function as xx approaches a particular point?
  4. How do we determine the range of a function defined on a specific interval?
  5. What conditions must a function meet to have an inverse?

Tip: When dealing with functions that involve square roots, always consider the constraints on the variable to ensure that the expression remains within the real number set.

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Math Problem Analysis

Mathematical Concepts

Functions
Inverse Functions
Limits
Domain and Range of Functions

Formulas

f(x) = (√x - √a)^2
Domain: Values of x for which f(x) is defined
Limit as x approaches a specific value
Inverse of a function: f^(-1)(x)

Theorems

Limit definition and properties
Inverse function theorem

Suitable Grade Level

High School