From 61b5ce20f25c5785e41574998a12c6d06eb05a5e Mon Sep 17 00:00:00 2001
From: Thomas Albers <thomas@thomaslabs.org>
Date: Wed, 8 Mar 2023 23:43:00 +0100
Subject: Restructure build system and directory structures

---
 src/math/laplace.org | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 src/math/laplace.org

(limited to 'src/math/laplace.org')

diff --git a/src/math/laplace.org b/src/math/laplace.org
new file mode 100644
index 0000000..ea2c638
--- /dev/null
+++ b/src/math/laplace.org
@@ -0,0 +1,39 @@
+#+title:Laplace Transformations
+#+author: Thomas Albers Raviola
+#+date: 2022-10-01
+#+setupfile: ../../math_options.org
+
+\begin{align*}
+\delta(t) & 1\\
+\delta(t - a) & e^{as}\\
+1 & \frac{1}{s}\\
+t & \frac{1}{s^2}\\
+\frac{t^{n-1}}{(n-1)!} & \frac{1}{s^n}, n \in \mathbb{N}\\
+\frac{t^{a-1}}{\Gamma(a)} & \frac{1}{s^a}\\
+e^{-at} &  \frac{1}{s+a}\\
+\frac{t^{n-1}e^{-at}}{(n-1)!} & \frac{1}{(s+a)^n}, n \in \mathbb{N}\\
+\frac{e^{-at}-e^{-bt}}{b - a} & \frac{1}{(s+a)(s+b)}, a \neq b\\
+\frac{1}{a}\sin(at) & \frac{1}{s^2 + a^2}\\
+\cos(at) & \frac{s}{s^2+a^2}\\
+\frac{1}{a}\sinh(at) & \frac{1}{s^2-a^2}\\
+\cosh(at) & \frac{s}{s^2-a^2}\\
+\frac{1-\cos(at)}{a^2} & \frac{1}{s(s^2+a^2)}\\
+\frac{at - \sin(at)}{a^3} & \frac{1}{s^2(s^2 + a^2)}\\
+\frac{\sin(at) - at\cos(at)}{2a^3} & \frac{1}{(s^2 + a^2)^2}\\
+
+\frac{t\sin(at)}{2a} & \frac{s}{(s^2+a^2)^2}\\
+\frac{\sin(at) + at\cos(at)}{2a} & \frac{s^2}{(s^2 + a^2)^2}\\
+\frac{b\sin(at) - a\sin(bt)}{ab(b^2 - a^2)} & \frac{1}{(s^2+a^2)(s^2+b^2)}, a^2 \neq b^2
+\frac{\cos(at) - \cos(bt)}{b^2 - a^2} & \frac{s}{(s^2+a^2)(s^2+b^2)}, a^2 \neq b^2
+\frac{1}{b}e^{-at}\sin(bt) & \frac{1}{(s+a)^2 + b^2}\\
+e^{-at}\cos(bt) & \frac{s+a}{(s+a)^2 + b^2}\\
+\frac{\sinh(at) - \sin(at)}{2a^3} & \frac{1}{s^4 - a^4}\\
+\frac{\sin(at)\sinh(at)}{2a^2} & \frac{s}{s^4+4a^4}\\
+\frac{1}{\sqrt{\pi t}} & \frac{1}{\sqrt{s}}\\
+\frac{\sin{at}{t}} & \arctan{\frac{a}{s}}\\
+u(t) - u(t-k) & \frac{1-e^{-ks}}{s}\\
+\frac{(t-k)^{a-1}}{\Gamma(a)}u(t-k) & \frac{1}{s^a}e^{-ks}, a > 0\\
+\sum_{n=0}^\inf u(t-nk) & \frac{1}{s(1-e^{-ks})}\\
+\frac{1}{2}(\sin(t) + \|\sin(t)\|) & \frac{1}{(s^2 + 1)(1 - e^{\pi s})}\\
+\|\sin(at)\| & \frac{a\coth(\frac{\pi s}{2 a})}{s^2 + a^2}
+\end{align*}
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