# Finding The Domain Of Rational Expressions 2 Video

Finding the domain of rational expressions 2 video involves domain, domain of a function, expressions, functions, number sense, numbers, rational expressions, rational numbers.

# Finding The Domain Of Rational Expressions 2 Video Tutorial

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# Finding The Domain Of Rational Expressions 2

This math video tutorial gives a step by step explanation to a math problem on "Finding The Domain Of Rational Expressions 2".

Finding the domain of rational expressions 2 video involves domain, domain of a function, expressions, functions, number sense, numbers, rational expressions, rational numbers. The video tutorial is recommended for 1st Grade, 2nd Grade, 3rd Grade, 4th Grade, 5th Grade, 6th Grade, 7th Grade, 8th Grade, 9th Grade, 10th Grade, and/or 11th Grade Math students studying Algebra, Geometry, Trigonometry, Probability and Statistics, Arithmetic, Basic Math, Pre-Algebra, Pre-Calculus, and/or Advanced Algebra.

# Domain of a Function

The domain of a given function is the set of "input" values for which the function is defined. For instance, the domain of cosine would be all real numbers, while the domain of the square root would only be numbers greater than or equal to 0 (ignoring complex numbers in both cases). In a representation of a function in a xy Cartesian coordinate system, the domain is represented on the x axis.

# Expressions

An expression is a combination of numbers, operators, grouping symbols (such as brackets and parentheses) and/or free variables and bound variables arranged in a meaningful way which can be evaluated. Bound variables are assigned values within the expression (they are for internal use) while free variables can take on values from outside the expression.

# Rational Numbers

A rational number is a number which can be expressed as a ratio of two integers. Non-integer rational numbers (commonly called fractions) are usually written as the vulgar fraction a / b , where b is not zero. a is called the numerator, and b the denominator.