inverselaplace 1/(s^2+s+1)

Lösung

inverse laplace transformation

\frac{1}{s ^{2} + s + 1}

e^{- \frac{t}{2}} \frac{2}{3} sin (\frac{3 t}{2})

Schritte zur Lösung

L^{- 1} {\frac{1}{s ^{2} + s + 1}}

\frac{1}{s ^{2} + s + 1} = \frac{1}{( s + \frac{1}{2} ) ^{2} + \frac{3}{4}}

= L^{- 1} {\frac{1}{( s + \frac{1}{2} ) ^{2} + \frac{3}{4}}}

Wende inverse Transformationsregel an: if

L^{- 1} {F (s)} = f (t)

dann

L^{- 1} {F (s - a)} = e^{a t} f (t)

Für

\frac{1}{( s + \frac{1}{2} ) ^{2} + \frac{3}{4}} : a = - \frac{1}{2}, F (s) = \frac{1}{s ^{2} + \frac{3}{4}}

= e^{- \frac{1}{2} t} L^{- 1} {\frac{1}{s ^{2} + \frac{3}{4}}}

L^{- 1} {\frac{1}{s ^{2} + \frac{3}{4}}} : \frac{2}{3} sin (\frac{3 t}{2})

= e^{- \frac{t}{2}} \frac{2}{3} sin (\frac{3 t}{2})

\int sin^{2} (\frac{1}{2} x) d x

\frac{d}{d x} (9 x^{4})

\int \frac{x}{2 - 3 x} d x

\frac{d}{d x} (\frac{1}{( 3 x + 8 ) ^{2}})

\frac{\partial}{\partial x} (\frac{3 x}{y})