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authorPrefetch2021-02-21 20:53:46 +0100
committerPrefetch2021-02-21 20:53:46 +0100
commit15bfb7730801809704c6561e20c5ca47627b2d79 (patch)
tree0f911134a4b040cb43b1acbecfb43931bd5c0837 /latex/know/concept/partial-fraction-decomposition
parentd33ac5f01a6599406d516edfd45b9938795cea6d (diff)
Add "Gram-Schmidt method"
Diffstat (limited to 'latex/know/concept/partial-fraction-decomposition')
-rw-r--r--latex/know/concept/partial-fraction-decomposition/source.md12
1 files changed, 5 insertions, 7 deletions
diff --git a/latex/know/concept/partial-fraction-decomposition/source.md b/latex/know/concept/partial-fraction-decomposition/source.md
index aa03f9c..69428e7 100644
--- a/latex/know/concept/partial-fraction-decomposition/source.md
+++ b/latex/know/concept/partial-fraction-decomposition/source.md
@@ -3,7 +3,7 @@
# Partial fraction decomposition
-*Partial fraction decomposition* or *expansion* is a method to rewrite a
+**Partial fraction decomposition** or **expansion** is a method to rewrite a
quotient of two polynomials $g(x)$ and $h(x)$, where the numerator
$g(x)$ is of lower order than $h(x)$, as a sum of fractions with $x$ in
the denominator:
@@ -21,9 +21,9 @@ $$\begin{aligned}
}
\end{aligned}$$
-Then the constant coefficients $c_n$ can either be found the hard way,
+The constants $c_n$ can either be found the hard way,
by multiplying the denominators around and solving a system of $N$
-equations, or the easy way by using the following trick:
+equations, or the easy way by using this trick:
$$\begin{aligned}
\boxed{
@@ -31,8 +31,7 @@ $$\begin{aligned}
}
\end{aligned}$$
-If $h_1$ is a root with multiplicity $m > 1$, then the sum takes the
-form of:
+If $h_1$ is a root with multiplicity $m > 1$, then the sum takes the form of:
$$\begin{aligned}
\boxed{
@@ -41,8 +40,7 @@ $$\begin{aligned}
}
\end{aligned}$$
-Where $c_{1,j}$ are found by putting the terms on a common denominator,
-e.g.:
+Where $c_{1,j}$ are found by putting the terms on a common denominator, e.g.
$$\begin{aligned}
\frac{c_{1,1}}{x - h_1} + \frac{c_{1,2}}{(x - h_1)^2}