CT Rational Frequency responses CT: If the system is described by lccdes then k Gu) HGu) bk (jo ∑kk(j) Hi(j)= First-or Second-order factors Prototypical Systems First-order system, has only one H1(1u jwt+1 energy storing element, e.g. L or C H (=)+2(=)+1 (ju)2+25n(ju)+ Second-order system, has two energy storing elements, e.g. L and CCT Rational Frequency Responses CT: If the system is described by LCCDEs, then Prototypical Systems — First-order system, has only one energy storing element, e.g. L or C — Second-order system, has two energy storing elements, e.g. L and C