Ответ:
4t^3-t+4S(t)=4t
3
−t+4
\begin{lgathered}v(t)=S'(t)=12t^2-1\\ v(2)=S'(2)=12\cdot 2^2-1=48-1=47\end{lgathered}
v(t)=S
′
(t)=12t
2
−1
v(2)=S
′
(2)=12⋅2
2
−1=48−1=47
\begin{lgathered}a(t)=v'(t)=24t\\a(2)=a'(2)=48\end{lgathered}
a(t)=v
′
(t)=24t
a(2)=a
′
(2)=48
Ответ: 47; 4847;48