# Math Help - Minimum speed given parametric form of position vector

1. ## Minimum speed given parametric form of position vector

The position function of a particle is given by $\mathbf r(t) = \langle -1 t^2, -2 t, t^2 - 1 t\rangle$.
The position function of a particle is given by $\mathbf r(t) = \langle -1 t^2, -2 t, t^2 - 1 t\rangle$.