1. ᠬᠦᠷᠦᠭᠡᠳ h t h t h(t )=-4.9t2+14.7t+18
2. y =Asin(ωx +φ) A,ω, φ A,ω, φ y =Asin(ωx + φ) A,ω,φ y =sinx
3. ① ② ③ 17 ④
4.
5.
1.
2. 45
3.