LAPLACE TRANSFORM ================= / | L[f(t)] = | e^(-st) f(t) dt | /0 Laplace Transform Pairs ----------------------- f(t) F(s) Name ----------------------------------------------------- (t) 1 unit impulse H[t] 1/s Heavyside step function e^(-at) 1/(s+a) t 1/(s^2) (t^n)/n! 1/(s^(n+1)) t(e^(-at)) 1/((s+a)^2) (t^n)(e(-at))/(n!) 1/((s+a)^(n+1)) sin(bt) b/((s^2)+(b^2)) cos(bt) s/((s^2)+(b^2)) e^(-at)sin(bt) b/((s+a)^2+(b^2)) e^(-at)cos(bt) (s+a)/((s+a)^2+(b^2)) Properties ---------- f(t) F(s) -------------------------------------- A f(t) A F(s) f1(t) + f2(t) F1(s) + F2(s) f1(t) - f2(t) F1(s) - F2(s) f(at) 1/a F(s/a) , a>0 f(t-t0) H[t-t0] e^(-t0s) F(s) , t0 >= 0 f(t) H[t-t0] e^(-t0s) L[ f(t+t0) ] e^(-at) f(t) F(s+a) t f(t) - d/ds F(s) /x 1/t f(t) | F() d /s /t | f1() f2(t-) d F1(s) F2(s) /0 f1(t) @ f2(t) F1(s) F2(s) , @ represents convolution f1(t) f2(t) F1(s) @ F2(s) L [ dn/dt^n (f(t)) ] = s^n F(s) - s^(n-1) f(0) - s^(n-2) f`(0) - s^(n-3) f``(0) - ... ... -s^0 f^`(n-1)(0) As usual, no guarentees are made as to the accuracy or obsolescence of this information. Use at your own risk.