Giả sử \( \frac{x}{y}=4; \, \, \,xy=9. \) Ngoài ra \(x \ge 0. \) Khi đó \( \left( x; \, \,y \right) \) bằng?
A.\(\left( x;\,\,y \right)=\left( 3;\,\,\frac{3}{4} \right)\)
B.\(\left( x;\,\,y \right)=\left( 6;\,\,\frac{1}{2} \right)\)
C.\(\left( x;\,\,y \right)=\left( 6;\,\,\frac{3}{2} \right)\)
D.\(\left( x;\,\,y \right)=\left( 6;\,\,\frac{5}{2} \right)\)
A.\(\left( x;\,\,y \right)=\left( 3;\,\,\frac{3}{4} \right)\)
B.\(\left( x;\,\,y \right)=\left( 6;\,\,\frac{1}{2} \right)\)
C.\(\left( x;\,\,y \right)=\left( 6;\,\,\frac{3}{2} \right)\)
D.\(\left( x;\,\,y \right)=\left( 6;\,\,\frac{5}{2} \right)\)
Loga
Hóa Học lớp 12
