Differentialrechnung

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(Fourier-Transformation)
Current revision (16:52, 20 May 2011) (view source)
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== Ableitungen/Integrale ==
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{|border=1
{|border=1
|'''Funktion <math>f(x)</math>'''
|'''Funktion <math>f(x)</math>'''
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== Integrationsregeln ==
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siehe [[Integration]]
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<math>\int[f(x)+g(x)]dx = \int f(x)dx + \int g(x)dx</math>
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<math>\int{a f(x)}dx = a \int f(x)dx</math>
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<math>\int[f(x)]^n f'(x)dx = \frac 1{n+1}[f(x)]^{n+1} + C,\ n\ne-1</math>
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<math>\int f(x)f'(x) dx = \frac 1 2 f^2(x) + C</math>
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<math>\int_a^b f(x) dx = -\int_b^a f(x) dx</math>
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<math>\int_a^a f(x) dx = 0</math>
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<math>\int_a^b f(x)dx = \int_a^c f(x)dx + \int_c^b f(x)dx,\ c \epsilon [a, b]</math>
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<math>\int_a^x f(t) dt = F(x)|_a^x = F(x) - F(a)\qquad</math> unbestimmtes Integral
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<math>\int\frac{f'(x)}{f(x)} = \ln\left|f(x)\right|+C</math>
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<math>\int\frac{f'(x)}{1+\left(f(x)\right)^2} dx = \arctan\,f(x)+C</math>
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Integration durch Substitution:
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<math>\int f(x) dx = \int f[\varphi(t)] \dot\varphi(t) dt\quad x=\varphi(t),\ dx=\dot\varphi(t)dt \quad</math> oder
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<math>\int_a^b f(x)\,dx = \int_{g^{-1}(a)}^{g^{-1}(b)} f(g(t))g'(t)\,dt,\ x = g(t)</math>
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partielle Integration:
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<math>\int uv'\,dx = uv - \int vu'\,dx,\ u=u(x),\ v=v(x) \quad</math> oder <math>\int u\,dv = uv-\int v\,du \quad</math> oder
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<math>\int_a^b u(x) v'(x)\,dx = [u(x) v(x)]_a^b - \int_a^b v(x) u'(x)\,dx</math>
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== weitere Integrale ==
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{|border=1
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|'''Funktion <math>f(x)</math>'''
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|'''Integral <math>F(x)=\int f(x) d x</math>'''
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|<math>\sin^2 x</math>
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|<math>\frac 1 2 (x-\sin x \cos x)</math>
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|<math>\cos^2 x</math>
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|<math>\frac 1 2 (x+\sin x \cos x)</math>
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|<math>\frac 1{\cos^2 x}</math>
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|<math>\tan x+C</math>
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|<math>\frac 1{\sin^2 x}</math>
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|<math>-\cot x+C</math>
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|<math>\frac 1{\sqrt{1-x^2}}</math>
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|<math>\arcsin x+C</math>
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|<math>\frac 1{\sqrt{1+x^2}}</math>
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|<math>\arctan x+C</math>
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|<math>\frac 1{\cosh^2 x}</math>
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|<math>\tanh x+C</math>
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|<math>\frac 1{\sinh^2 x}</math>
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|<math>-\coth x+C</math>
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|<math>\frac 1{\sqrt{x^2+1}}</math>
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|<math>\operatorname{arsinh} x+C = \ln\, \left|x+\sqrt{x^2+1}\right|+C</math>
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|<math>\frac 1{\sqrt{x^2-1}}</math>
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|<math>\operatorname{arcosh} x+C = \ln\, \left|x+\sqrt{x^2-1}\right|+C</math>
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|<math>\frac 1{\sqrt{1-x^2}}</math>
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|<math>\begin{cases}\operatorname{artanh}x+C=\frac 1 2 \ln\frac{1+x}{1-x}+C,& |x|<1\\\operatorname{arcoth}x+C=\frac 1 2 \ln\frac{x+1}{x-1}+C,& |x|>1\end{cases}</math>
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|<math>\frac 1{a^2+x^2}</math>
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|<math>\frac 1 a \cdot \arctan\frac x a+C</math>
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|<math>\frac 1{a^2-x^2}</math>
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|<math>\begin{cases}\frac 1 a \operatorname{artanh}\frac x a + C,& |x|<a\\\frac 1{2a}\ln\frac {a-x}{a+x} + C,& |x|<a\end{cases}</math>
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|<math>\frac 1{x^2-a^2}</math>
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|<math>\begin{cases}-\frac 1 a \operatorname{arcoth}\frac x a + C,& |x|>a\\\frac 1{2a}\ln\frac {x-a}{x+a} + C\end{cases}</math>
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|<math>\frac 1{sqrt{a^2-x^2}}</math>
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|<math>arcsin{\frac x a} + C,\ |x|<a</math>
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|<math>\frac 1{sqrt{a^2+x^2}}</math>
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|<math>\begin{cases}\operatorname{arsinh}\frac x a + C\\\ln \left(x+\sqrt{a^2+x^2} \right)+C\end{cases}</math>
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|<math>\frac 1{sqrt{x^2-a^2}}</math>
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|<math>\begin{cases}\operatorname{arcosh}\frac x a + C,& |x|>a\\\ln \left(x+\sqrt{x^2-a^2} \right)+C\end{cases}</math>
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|<math>\frac 1{sqrt{x^2 \pm a^2}}</math>
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|<math>ln \left|x+\sqrt{x^2 \pm a^2} \right|+C</math>
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|<math>\sqrt{a^2-x^2}</math>
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|<math>\frac x 2 \sqrt{a^2-x^2} + \frac{a^2}2 \arcsin\frac x a+C \quad</math>(Kreisintegral)
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|<math>\sqrt{a^2+x^2}</math>
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|<math>\frac x 2 \sqrt{a^2+x^2} + \frac{a^2}2 \ln(x+\sqrt{a^2+x^2})+C</math>
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|<math>(a x + b)^n</math>
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|<math>\frac{(a x + b)^{n+1}}{a(n+1)},\ n\ne-1</math>
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|<math>\frac 1{ax+b}</math>
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|<math>\frac 1 a \ln|ax+b|</math>
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|}
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== Integralfunktionen ==
== Integralfunktionen ==
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== Fourier-Transformation ==
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== [http://de.wikipedia.org/wiki/Fourier-Transformation Fourier-Transformation] ==
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Bildfunktion <math>F(j\omega) = \mathcal F\{f(t)\} = \int_{-\infty}^\infty f(t)\, e^{-j\omega t} dt</math>
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== [http://de.wikipedia.org/wiki/Laplace-Transformation Laplace-Transformation] ==
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Originalfunktion, Oberfunktion:
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<math>f(t) = \mathcal L^{-1}\{f(t)\} = \frac 1 {2j\pi} \int_{\beta-j\omega}^{\beta+j\omega} F(s)\, e^{s t} ds</math>
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Laplace-Transformierte, Unterfunktion, Bildfunktion:
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Bildfunktion <math>F{f(t)} = </math>
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<math>F(s) = \mathcal L\{f(t)\} = \int_0^\infty f(t)\, e^{-s t} dt</math>
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[[category:remember]]
[[category:Mathematik]]
[[category:Mathematik]]

Current revision

Contents

Ableitungen/Integrale

Funktion MathImage Ableitung MathImage Integral MathImage
MathImage MathImage MathImage
MathImage MathImage MathImage
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MathImage MathImage
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MathImage MathImage
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siehe Integration

Integralfunktionen

Integralsinus MathImage Eulersche Konstante MathImage
Integralcosinus MathImage
Exponentialintegral MathImage
Integrallogarithmus MathImage
Gaußsches Fehlerintegral MathImage


Fourier-Transformation

Bildfunktion MathImage


Laplace-Transformation

Originalfunktion, Oberfunktion:

MathImage

Laplace-Transformierte, Unterfunktion, Bildfunktion:

MathImage

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