Question: Compute r ' ' ( t ) . r ( t ) = ( 8 cos t ) i + ( 7 sin t )

Compute r''(t).
r(t)=(8 cos t)i+(7 sin t)j
Question 41 options:
r''(t)=(-8 cos t)i+(-7 sin t)j
r''(t)=(-8 sin t)i+(-7 cos t)j
r''(t)=(8 sin t)i+(7 cos t)j
r''(t)=(8 cos t)i+(7 sin t)j

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