Variation of parameters: Difference between revisions

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m Examples: Pursuing consistency by inserting a couple of hyphens.
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== Examples ==
 
=== First -order equation ===
:<math> y' + p(x)y = q(x) </math>
The general solution of the corresponding homogeneous equation (written below) is the complementary solution to our original (inhomogeneous) equation:
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\end{align}</math>
 
=== Specific second -order equation ===
Let us solve
:<math> y''+4y'+4y = \cosh x</math>