Table of Contents

## What is the domain of X √ X?

So the domain for √x is x≥0 x ≥ 0 .

### What is the domain of F X √ X 2 1?

The domain of the function will thus be (−∞,−1)∪(1,+∞) . The range of the function will be determine by the fact that the square root will always give a positive value for real numbers.

#### What is the domain of square root function?

The domain of a square root function is all values of x that result in a radicand that is equal to or greater than zero.

**What is the domain of the function f/x )= √ 4 x?**

The domain is the set of x -values that can be used to draw the function so, You are unable to get a square-root of a negative number therefore the value under the square root must be ≥0 . Therefore we need all of the x -values that result in the value of 4−x being ≥0 .

**What is FFX?**

f(f(x)) means replace each x in f(x) by the entire function f(x). For example, if f(x) = x3 + 13x + 9, then f(f(x)) = (x3 + 13x + 9)3 + 13(x3 + 13x + 9) + 9. However, f2(x) would mean (f(x))2 so, in the above example, f2(x) = (x3 + 13x + 9)2

## How do you find the domain of an equation?

In order to find the domain of a function, you’ll need to list all the possible numbers that would satisfy the function, or all the “x” values. Rewrite the equation, replacing f(x) with y. This puts the equation in standard form and makes it easier to deal with.

### How to find the domain of a function algebraically?

Draw the graph

#### Is the domain the X or y value?

The functions just tend to infinity as the x and y values get infinitely large or infinitely small. The function y = x is an interesting case of domain and range because the domain and range values are always the same. In other words, since y always equals x, the input values always equal the output values.

**What is the domain of f(x)?**

f (x) = x The domain of f (x) is the set of values for which f (x) is defined. In the context of Algebra I that means a subset of the real numbers R. In the case of the given f (x), it is well defined for any x ∈ R, so the domain is the whole of R, i.e. (− ∞,∞)