#### Answer

True

#### Work Step by Step

True. The velocity vector of $ r(t)$ is given by the first derivative of $ r(t)$ with respect to $ t $ and the tangent vector is defined similarly.

Published by
W. H. Freeman

ISBN 10:
1464125260

ISBN 13:
978-1-46412-526-3

True

You can help us out by revising, improving and updating this answer.

Update this answerAfter you claim an answer you’ll have **24 hours** to send in a draft. An editor
will review the submission and either publish your submission or provide feedback.