16.06.2019 Views

Bộ đề dự đoán kì thi THPT Quốc Gia năm 2019 chuẩn (Kèm lời giải) môn Toán

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3 2<br />

Câu 50. Cho hàm số f x x 12x ax b đồng biến trên ,<br />

thỏa mãn f f f 3 3 và<br />

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f f f f 4 4. Tìm f 7 .<br />

A. 31. B. 32. C. 33. D. 34.<br />

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NGUYEN THANH TU PRODUCTION<br />

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