L
ljnkun_st


tim gia' tri nho nhat'
y=[tex]\sqrt{x^2- 2*b*x + 2*b^2}[/tex] +[tex]\sqrt{x^2 - 2*b*x + 2*b^2}[/tex]
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y=[tex]\sqrt{x^2- 2*b*x + 2*b^2}[/tex] +[tex]\sqrt{x^2 - 2*b*x + 2*b^2}[/tex]
8-|
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