?For the following problems, find a tangent vector at the indicated value of
Chapter 3, Problem 54(choose chapter or problem)
For the following problems, find a tangent vector at the indicated value of t.
\(\mathbf{r}(t)=\cos (2 t) \mathbf{i}+2 \sin t \mathbf{j}+t^{2} \mathbf{k} ; t=\frac{\pi}{2}\)
Text Transcription:
\mathbf{r}(t)=\cos (2 t) \mathbf{i}+2 \sin t \mathbf{j}+t^{2} \mathbf{k} ; t=\{\pi}{2}
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