tranthanhnha.2752001 4/11/2024 10:01:01 PM

Câu 12:        Cho hàm số https://lh7-us.googleusercontent.com/docsz/AD_4nXcVXYSdZxQIrgfjltxRLN_6NW2OHpCAD3rl7buNnVpNjX69akhM3wltqqWqCB4v8z6qmF2NItfWTojEMzHb8wogeiVHTwpBc_Kao-JnXp3FAQE_0eFhAfRHgiNX0P7q62d7gKFtCV_piGcJdFrav9FtbDOpT1HGmpw=s800?key=RIwYW7zWLkdsX14pzAwMkw có bảng biến thiên như sau:

https://lh7-us.googleusercontent.com/docsz/AD_4nXduQliL08XcZqcPhgiI8hDqgEVMUxM9cCH5XbZmYFM6_Bb0cKm1csUd0ReTNDMjhg7slV4A4nSArgl0wpPQtKXk_mDBGrg46gItZXT-HfqXh5S4V2M3JV_IixemXNqkjz_CYNvpXUAylVjOmnfxscmF3FiPJoYvHrk=s800?key=RIwYW7zWLkdsX14pzAwMkw

Hàm số đã cho nghịch biến trên khoảng nào dưới đây?

A. https://lh7-us.googleusercontent.com/docsz/AD_4nXeIYNT7TmX70XgRyRJ1URTVjIEoxAmWP5NcD4T5Nvskk5bM2HQ9wYRTXHPlh5DFNdkMJkeRJe4_UB0R0_5a4WWwkVxbVrYVYMHp-7CTQQsgtuNVEiZLHervRbVbnfkCqnoffTDLMNXdQoaBQUOq6f-K5PXhKm2KtwE=s800?key=RIwYW7zWLkdsX14pzAwMkw.        Bhttps://lh7-us.googleusercontent.com/docsz/AD_4nXeVpM_rV7wbuL9SQF925Kfv0W_fM0xq29uyYX3YgyKsLV6YCs4tm5GFn5m4aMPpv2a1MLcI2-G3dvk3jaZTrjr6_EknLYe1T4wYjH8-No-GqpC2XbpbpTGp6Ueq-GfUZauEfjZB8RejjLl8u1qI9alYQ8t4wmNYtyY=s800?key=RIwYW7zWLkdsX14pzAwMkw.        C. https://lh7-us.googleusercontent.com/docsz/AD_4nXevI6pRMgmGgPztHExWSNekFllgWasQ2twB_S6DN1f5-RrOXDVqu1vJ_bni1CbBe5QyBFpeyfYjSxHQ_zGu36ufILp2FKPw3d6zFOePbWoESCbJiAwvJZWIsXW7s5xDNaitsVX7YLFXaYSdq0X-LyhlhadsKX5PiFY=s800?key=RIwYW7zWLkdsX14pzAwMkw.        D. https://lh7-us.googleusercontent.com/docsz/AD_4nXeEZYh7qjUK67AsOvrDc2KDBScZRRotNXsrmUPYjejH6ZsTrz7jW3v92HNhWsQ2lNfwSJl-Tz4TBMmk6CeR6YwTNxR9fgLoPufHyqV1qwb2WXJn0t0gEOJ6ejF142EPd8TcpAoRDHuxJHDOCEejfMsxJHBVyV9WUXM=s800?key=RIwYW7zWLkdsX14pzAwMkw.

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