1. The problem statement, all variables and given/known data The condition to be satisfied for a Laplace transform is U(t)<Mekt 2. Relevant equations I am trying to proove that et2 does not satisfy this 3. The attempt at a solution It was suggested that we try taking logarithms of both side: t2<ln(Mekt) t2<lnM+lnekt t2<lnM+kt t2-kt<ln M I dont think this shows anything?!