Partial Fraction Decomposition Calculator

Decompose a proper rational function (cx + d) / (ax² + bx + c) into partial fractions when the denominator factors over the reals.

Frequently Asked Questions

What is partial fraction decomposition?

Writing a rational function P(x)/Q(x) as a sum of simpler rational functions whose denominators are the irreducible factors of Q(x). Each piece is much easier to integrate.

When do I need it?

Whenever you must integrate, Laplace-transform, or series-expand a rational function. It is also useful in control theory and signal processing.

What if the denominator is irreducible?

Use a numerator of the form Mx plus N over the irreducible quadratic. The decomposition still helps even though the piece does not simplify further.

Important Disclaimer: Estimates for informational purposes only.

This calculator provides estimates for informational purposes only. Results are based on assumptions and may not reflect actual outcomes. Consult qualified professionals in relevant fields before making important decisions based on these results.