!$ G\left(s\right)=k.\dfrac{\left(c-s\right).\left(d-s\right)}{\left(a-s\right).\left(b-s\right)}; !$ onde !$ a < c < d < b. !$

!$ G\left(s\right)=k.\dfrac{a}{s^2+a.s+b}.\ \ !$

!$ G\left(s\right)=k.\dfrac{\left(d-s\right).\left(1,2.b-s\right)}{\left(a-s\right).\left(b-s\right).\left(c.s\right)}; !$ onde !$ a < d < b < c. !$

!$ G\left(s\right)=k.\dfrac{\left(c-s\right)}{\left(a-s\right).\left(b-s\right)}; !$ onde !$ c < a < b. !$

!$ G\left(s\right)=k.\dfrac{1}{\left(a-s\right).\left(b-s\right)}; !$ onde !$ a < b. !$