R
rainshine12
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
tìm a để hệ có nghiệm duy nhất
[TEX]\left{{2^{|x|} +|x| = y + x^2 +a}\\{x^2 + y^2 =1}[/TEX]
[TEX]\left{{2^{|x|} +|x| = y + x^2 +a}\\{x^2 + y^2 =1}[/TEX]
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