Jawabanmu

2014-07-19T15:19:40+07:00
Turunan x = v = 12 t² + 2t
turunan v = a =  24t⇒masukkan t= 2
a = 48
2t diturunin jadi 2 kan..
ea yang bnar 24t + 2= 50
mxdnya t.nya dimasukkan
2014-07-19T18:22:33+07:00
Y = 4t³ + t³ + 3
y' = 12t² + 2t
y" = 24 t + 2
y"(2) = 24.2 + 2
= 50 m/s²

^_^
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