Question: Find dy / dx and d 2 y / dx 2 , and find the slope and concavity ( if possible ) at the given

Find
dy/dx and d2y/dx2,
and find the slope and concavity (if possible) at the given value of the parameter. (If an answer does not exist, enter DNE.)
Parametric Equations Point
x =
t
,y =5t 4
t =4

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