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=== Quadratic formula ===
A [[linear equation]] can be easily solved via the parallel inverse:
:<math>\begin{align}
ax\parallel b &= \infty \\[3mu]
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\end{align}</math>
To solve a parallel [[quadratic equation]], [[Completing the square|complete the square]] to obtain an analog of the [[quadratic formula]]
:<math>
\begin{align}
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===Reduced mass===
Given masses ''m'' and ''M'', the [[reduced mass]] <math>\mu = \frac{m M}{m + M} = m \parallel M</math> is frequently applied in mechanics. For instance, when the masses orbit each other, the [[moment of inertia]] is their reduced mass times the distance between them.
=== Circuit analysis ===
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