Chapter 12.2, Problem 21E

(a)

To determine

To calculate: The value of the function $r\text{'}\left(t\right)$ for the provided function $r\left(t\right)=\left(4\cos t\right)i+\left(4\sin t\right)j$.

(b)

To determine

To calculate: The value of the function $r\text{'}\text{'}\left(t\right)$ for the provided function $r\left(t\right)=\left(4\cos t\right)i+\left(4\sin t\right)j$.

(c)

To determine

To calculate: The value of the function $r\text{'}\left(t\right)\cdot r\text{'}\text{'}\left(t\right)$ for the provided function $r\left(t\right)=\left(4\cos t\right)i+\left(4\sin t\right)j$.