laplace transform

use the definition of laplace transform to find [t*e^kt]

impulse forcing

you have a mass-spring system, a unit impulse is applied to this system(at equilibrium,at rest) and the response is recorded and determined to be (10e^-0.1t)- (10e^-0.2t) In general terms what does the form of the impulse response function tell you about the system?

laplace transform

if L[f(t)]=F(s) then L[t*f(t)]= -dF/ds use this result to compute L[t*e^kt]

Determine whether the following eqautions are linear or nonlinear.

a) yy''-y' = sin x b) x^2y''-y'+y = cos x

Show that the operator L defined by

L[y](x)= Integral between 0 and 1 (x-t)^2 y dt is a linear operator. or See attachment...