## Domain of a Function: Examples

Example • The set A is the Domain, • The set B is the Codomain, • And the set of elements that get pointed to in B (the actual values produced by the function) are the Range, also

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## From Graph

Solution: Step 1:f x = x + 3 -1. Step 3: Domain of a function is the set of all possible input values for the function. Step 4: Observe that the function is not defined only when x = - 3. Step 5: So

## How to find the domain of a function (video)

Examples State the domains of the following functions using inequalities. 1. f (x) = x 2 2. g (x) = √x 1. x 2 is a polynomial that is defined for all x values, so its domain is -∞ < x < ∞. 2. √x is an even
x

## Domain and Range

The domain of f(x) = x 2 in set notation is: D: {x | x∈ℝ} Again, D indicates domain. The | means such that, the symbol ∈ means element of, and ℝ means all real numbers. Putting it all together, this statement can be read as the domain is

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## Domain and Range

Domain: The function $latex f(x)= \frac{1}{x+3}$ is not defined for $latex x=-3$ since this would produce a division by zero (we would have a 0 in the denominator). Therefore, the domain of $latex f(x)$ is: “All real numbers except

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