Integration by Partial Fractions. Integration by Partial Fractions.
We know that a rational function is a ratio of two polynomials P(x)/Q(x), where Q(x) ≠ 0. Now, if the degree of P(x) is lesser than the degree of Q(x), then it is a proper fraction, else it is an improper fraction.
Because the partial fractions are each simpler. This can help solve the more complicated fraction. For example it is very useful in Integral Calculus.