Question
Find the velocity and acceleration vectors for the position vectors given in Exercises .$$\text { 4. } \mathbf{r}(t)=\cos 3 t \mathbf{i}+\sin 4 t \mathbf{j}+t \mathbf{k}$$
Step 1
$$\mathbf{v}(t) = \frac{d\mathbf{r}(t)}{dt} = \frac{d}{dt}(\cos 3t \mathbf{i} + \sin 4t \mathbf{j} + t \mathbf{k})$$ ** Show more…
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