Solución

$$\bigg\lang 0,2sent\bigg(t−\frac{1}{t}\bigg)−2cost\bigg(1+\frac{1}{t^2}\bigg), 2sent\bigg(1+\frac{1}{t^2}\bigg)+2cost\bigg(t−\frac{2}{t}\bigg)\bigg\rang$$