How to find the domain of an expression

To determine the domain of the rational expression \dfrac {P (x)} {Q (x)} Q(x)P (x), we follow these two steps: We solve the equation. Q ( x) = 0. Q (x)=0 Q(x) = 0. We write the domain as the

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Domain of a Rational Expression 1

Functions assign outputs to inputs. The domain of a function is the set of all possible inputs for the function. For example, the domain of f (x)=x² is all real numbers, and the domain of g (x)=1/x is all real numbers except for x=0. We can also define special functions whose

How to find the domain of a rational equation

Let us first find the values that makes the denominator equal to zero x 3 - x = 0 Factor the expression on the left hand side of the equation x(x 2 - 1) = 0 x(x + 1)(x - 1) = 0 Solve the

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Intro to rational expressions (article)

This algebra video tutorial explains how to find the domain of a function that contains radicals, fractions, and square roots in the denominator using interv

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Domain and Range of Rational Functions

Find the domain of function f defined by f (x) = √ (x - 1) Solution to Example 1 For f (x) to have real values, the radicand (expression under the radical) of the square root function must be positive

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