📐 Matematika · Hosila va integral · ★★☆
Moddiy nuqta s(t) = t³ − 2t² + 5 (m) qonun bo'yicha harakatlanadi. t = 3 s paytdagi tezligini toping.
- A)15 m/s
- B)14 m/s
- C)23 m/s
- D)10 m/s
👀 To'g'ri javob va tushuntirishni ko'rish
✓ A) 15 m/s
💡 v(t) = s′(t) = 3t² − 4t, v(3) = 27 − 12 = 15 m/s.