Rational Functions and Equations
What is a Rational Equation?
A rational equation is an equation containing at least one fraction whose numerator and denominator are polynomials
What is a Rational Function?
A rational function is any function which can be defined by a rational fraction, i.e. an algebraic fraction such that both the numerator and the denominator are polynomials.
What makes a Rational Function undefined?
A rational function is undefined when the denominator is equal to zero. On SAT you may be asked to find the value of a variable that makes a rational expression undefined.
How to find the x and y intercepts of an Rational function.
To find the x-intercept, make the numberator of the rational function equal to zero.
What is a Rational Inequality?
A rational Inequality is an Inequality containing at least one fraction whose numerator and denominator are polynomials