Các câu hỏi tương tự
Cho hai so Thưc duong x, y thoa man x>=2y.Tim gia tri nho nhat cua bieu thuc P=(2x^2+y^2-2xy):xy
Cho cac so thuc x , y thay doi thoa man x + y = 2 . Tim gia tri nho nhat cua bieu thuc P = ( x4 + 1 )(y4 + 1) + 2013
cho x,y,z thoa man dieu kien :x+y+z+xy+yz+zx=6 tinh gia tri nho nhat cuax^2+y^2+z^2
cho ham so y=2x^2-3x+1. gia tri lon nhat cua x thoa man f(-x)=f(2x) la x=?
cho x,ythoa man 0<x<1 ,0<y<1 va \(\frac{x}{1-x}+\frac{y}{1-y}=1\)
tinh gia tri cua bieu thuc P=\(x+y+\sqrt{x^2-xy+y^2}\)
cho ba so thuc khong am x,y,z thoa man x+y+z=3 Tinh GTNN cua A=can(2x^2+3xy+2y^2)+can(2y^2+3yz+2z^2)+can(2z^2+3zx+2x^2)
cho x,y la cac so duong thay doi va thoa man dieu kien x+y\(\le\)1. tim gia tri nho nhat cua bieu thuc M=\(\frac{1}{x^2+y^2}+\frac{1}{xy}+4xy\)
cho x,y dương thoa man : x^2/9 + y^2/16 = 36. tim gia tri lon nhat cua p =x-y+2004
cho x;y;z duong thoa man xyz=1
tim gia tri nho nhat cua \(\frac{1}{x^2\left(y+z\right)}+\frac{1}{y^2\left(x+z\right)}+\frac{1}{z^2\left(x+y\right)}\)