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v= 2t i + j
posisi awal= 3i + 4j
dit:
posisi saat 4s
jwb:
dgn integral
3i + 4j + integral dri 2t i + j
3i + 4j + t^2i + t j
3i + 4j + 16i + 4j
19i + 8j
lalu di kuadrat kemudian di akar