Defining and Differentiating Vector-Valued Functions Practice Test

$\langle t\cos t-\sin t,\ -t\sin t-\cos t,\ \tfrac{1}{1+t^2}\rangle$

$\langle t\cos t+\sin t,\ t\sin t+\cos t,\ \tfrac{1}{1+t^2}\rangle$

$\langle t\cos t+\sin t,\ -t\sin t+\cos t,\ \tfrac{1}{1+t^2}\rangle$

$\langle \sin t,\ \cos t,\ \tfrac{1}{1+t^2}\rangle$

$\langle t\cos t+\sin t,\ -t\sin t+\cos t,\ \tfrac{1}{(1+t)^2}\rangle$