Find $\mathbf { r } ^ { \prime \prime } ( t )$

question 110

Multiple Choice

Find $\mathbf { r } ^ { \prime \prime } ( t )$ for the function given.
$$\mathbf { r } ( t ) = 8 \mathbf { i } + \sin t \mathbf { j } + \cos t \mathbf { k }$$

• A) \(\mathrm { r } ^ { tt } ( t ) = - 8 \sin t \mathrm { j } - \cos t \mathrm { k }\)
• B) \(\mathrm { r } ^ { tt } ( t ) = - \sin t \mathrm { j } - \cos t \mathrm { k }\)
• C) \(\mathrm { r } ^ {tt } ( t ) = \cos t \mathrm { j } - \sin t \mathrm { k }\)
• D) \(\mathrm { r } ^ { tte } ( t ) = - \sin t \mathrm { j } + 8 \cos t \mathrm { k }\)
• E) \(\mathrm { r } ^ {tt } ( t ) = - 8 \cos t \mathrm { j } - \sin t \mathrm { k }\)

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