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	Các bình luận về: Cho hàm số bậc ba \(y = f\left( x \right)\) có đồ thị như hình sau







Số nghiệm của phương trình \(f\left( {\left&#124; {2\cos x} \right&#124;} \right) = 1\) trong khoảng \(x \in \left( {0\,;\,\frac{{3\pi }}{2}} \right)\) là	</title>
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