Mình mong các bạn giải giúp mình bài này bởi đây là một bài khó kinh khủng =((

Các bạn nhớ chỉ dùng Cauchy hay bunnha hay j đó th nhe đừng dùng đạo hàm hay định lý karamata =((

đây là 1 câu đó 2000 năm chỉ có nhà vật lí thomas anhsan mới vẽ được

tìm tất cả các giá trị tham số m để phương trình sau \(\sqrt{x^2+2x+m}=2x+1\)có 2 nghiệm phân biệt

nên chơi ff vs liên quân hoặc trò chơi thư giãn.

để bt chơi phải luyện thui

nên chơi pubg hoặc ff

\(\sqrt{-3x+2}+1< x\) (ĐKXĐ: \(D=(-\infty;\frac{2}{3}]\))

\(\Leftrightarrow\sqrt{2-3x}< x-1\)

\(\Leftrightarrow\hept{\begin{cases}x-1>0\\2-3x< x^2-2x+1\end{cases}}\Leftrightarrow\hept{\begin{cases}x>1\\x^2+x-1>0\end{cases}}\)

\(\Leftrightarrow\hept{\begin{cases}x>1\\x< \frac{-1-\sqrt{5}}{2}\left(h\right)x>\frac{-1+\sqrt{5}}{2}\end{cases}}\Leftrightarrow x>1\)

Kết hợp ĐKXĐ suy ra BPT vô nghiệm.

mik ko biết gửi

ok nha bn

Ấp dụng bất đẳng thức Bu-nhi -a- cốp-xki :

\(P^2 = (2x + 3y)^2 \leq (2^2+3^2)(x^2+y^2)=13a^2=117 \rightarrow a^2 = 9 \rightarrow a= 3 hoặc -3\)

Chào em, em tham khảo nhé!

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