*Rational fraction*
is called the fraction of the form:

If
,
fraction is called proper.
*Common fractions*
is the rational fractions of the form:

, where

- natural numbers, coefficients are real numbers and the roots of the polinomial - is complex conjugate (i.e. ).

If the denominator is decomposed in the multiplication of the linear and/or quadratic multipliers:

,

where - real roots of the polinomial of order respectively, and where and complex conjugate roots of order , then initial fraction can be respesented such as:

Each linear multiplier of the form , contained in corresponds the decomposition of the form:

Each quadratic multiplier of the form , contained in corresponds to the decomposition of the form:

Our online calculator finds partial fraction decomposition of any (proper, improper) rational fraction. If initial fraction is the improper one, (i.e. order of polynomial in the numerator greaters of equals to the order of polynomial in the denominator) calculator divides numerator to the denominator and extracts the proper fraction.
*Partial fraction decomposition*
is usually used to
find the integrals
of the rational expressions.

The example of the step by step solution is here.

Fraction decomposition calculator

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