Hàm Số Y=x2lnx đạt Cực Trị Tại điểm | Cungthi.online

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Hàm số y=x2lnx đạt cực trị tại điểm A.x=e. B.x=0;x=1e. C.x=0. D.x=1e. Đáp án và lời giải Đáp án:D Lời giải:Lời giải Chọn D Tập xác định:D=0;+∞. Ta có:y′=2x. lnx+x. y′=0⇔2x. lnx+x=0⇔x=0∉0;+∞x=1e. Bảng biến thiên: Vậy hàm số y=x2lnx đạt cực trị tạix=1e.

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Bài tập trắc nghiệm 45 phút Cực trị của hàm số - Hàm số và Ứng dụng - Toán Học 12 - Đề số 1

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Một số câu hỏi khác cùng bài thi.

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