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For a rational function, the first thing to recognise is the presence of simple:
AComplex angles
BInfinite sums
CCurved arcs
DLinear factors
Answer & Solution
Correct answer: D. Linear factors
1. The denominator is examined.
2. Its factors decide the split.
3. They are simple linear factors.
_Source: OpenStax Calculus Volume 2, Chapter 3, Techniques of Integration._
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