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Mathematics, 07.12.2021 14:00 brucewayne390
Cho hàm số ()yf x=có bảng xét dấu của ()fxnhư sau:Hàm số đã cho nghịch biến trên khoảng nào sau đây?A.()1; 3 .B.();1 .−C.();.− +D.()3
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Cho hàm số ()yf x=có bảng xét dấu của ()fxnhư sau:Hàm số đã cho nghịch biến trên khoảng nào sau đây?...
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