# Partial Fractions

**Rational Fraction**

Functions of *x* that can be expressed in the form *P*(*x*)/*Q*(*x*), where both *P*(*x*) and *Q*(*x*) are polynomials of *x*, is known as *rational fraction*. A rational fraction is known to be a ** proper fraction** if the degree of

*P*(

*x*) is less than the degree of

*Q*(

*x*), otherwise, it is an

**.**

*improper fraction*Proper fraction can be expressed as the sum of ** partial fractions**, provided the denominator were factorized.