Review of Partial FractionsThe purpose of the method of partial fractions is to express a fraction having a complicatedpolynomial denominator as the sum of fractions whose denominators are simpler polynomials.Step 0. Make sure that the degree of the numerator is strictly less than the degree of thedenominator. If the degree of the numerator is equal or greater, use long division before usingpartial fractions.Step 1. Choose the form of the partial fraction decomposition.(a) Factor the denominator into linear and irreducible (non-factorable) quadratic factors.(b) Each repeated factor in the denominator requires multiple fractions in the decomposition.For example, the expression in the denominator requires three fractions — one withÐB "Ñ$denominator , one with denominator , and one with denominator .ÐB"ÑB"$2(c) Each denominator which is a linear polynomial or a power of a linear polynomial requires
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