?Let r(t) = ? cost, t, sint ? and use it to answer the following questions.Find the

Chapter 3, Problem 20

(choose chapter or problem)

Let r(t) = 〈 cost, t, sint 〉 and use it to answer the following questions.

Find the domain of \(\mathbf{r}(t)=2 e^{-t} \mathbf{i}+e^{-t} \mathbf{j}+\ln (t-1) \mathbf{k}\)

Text Transcription:

\mathbf{r}(t)=2 e^{-t} \mathbf{i}+e^{-t} \mathbf{j}+\ln (t-1) \mathbf{k}