Find the derivative of the vector function.

MATHEMATICS · Subjective · AP · Calculus BC · Parametric, Polar, and Vector-Valued Functions · Parametric, Polar, and Vector-Valued Functions

Problem

\mathbf{r}(t) = t \sin t \mathbf{i} + e^t \cos t \mathbf{j} + \sin t \cos t \mathbf{k}