問題詳情
22.新型冠狀病毒席捲全球，調查發現開始傳染第x週，感染人數達y人，已知x與y的關係式為y＝100＋5000x－250x2。請問本次新型冠狀病毒在第幾週感染的人數會達到最多？
(A)第5週
(B)第10週
(C)第15週
(D)第20週
(A)第5週
(B)第10週
(C)第15週
(D)第20週
參考答案
答案：B
難度：計算中-1
書單：沒有書單，新增
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