# Application of Differentiation Problem

by bjgawp
Tags: application, differentiation
 Sci Advisor HW Helper PF Gold P: 12,016 Well, denote Felicity's position VECTOR as a function of time: $$\vec{r}_{F}(t)=(x_{F}(t),y_{F}(t))$$ and similarly, for Jane: $$\vec{r}_{J}(t)=(x_{J}(t),y_{J}(t))$$ now, choose an intelligent origin, specify the component functions, and find an expression for the distance between them, as a function of time.