Question

Find the acute angle between the tangents to the curve $\overline{r} = t^{2}\overline{i}+2t\overline{j}-\frac{1}{2}t^{2}\overline{k}$ at the points t =1 and t = −3.

Answer 1

bbgsck^$#:(bcxbk```₩;"##$89^32#¡¿☆¿》|\《