#votruc
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![s3-ap-southeast-1.amazonaws.com · Nêíl hàm sô' f liên tuc trên [a; b] và có dao hàm f' (x) > 0 trên khoång Chú I'd . (x) vói moi x e I thì hàm sô f ông dôi trên](https://static.cupdf.com/doc/330x215/5d6786c688c993f41f8bc46b/s3-ap-southeast-1-neil-ham-so-f-lien-tuc-tren-a-b-va-co-dao-ham.jpg)
