Các câu hỏi tương tự
Cho x,y,z > 0. Tim GTNN cua bieu thuc: P=x/y+z + y/z+x + z/x+y
Cho x,y,z la cac so thuc duong thoa man x + y + z = 6
Tim GTNN cua bieu thuc P = ( x + y )/(xyz)
Cho x,y,z la cac so nguyen duong thoa man 1/x + 1/y + 1/z = 2015.
Tim GTLN cua bieu thuc P=x+y/x^2+y^2 + y+z/y^2+z^2 + z+x/z^2+x^2
cho x,y,z la cac so thuc duong thoa man x+y+z=1 tim gia tri nho nhat cua bieu thuc M=1/16x+1/4y+1/z
tim gia tri nho nhat cua bieu thuc P=1/x^2+x+1/y^2+y+1/z^2+z
cho cac so thuc x,y,z thoa man 0<a<hoac=x,y,z < hoac=b . tim gia tri lon nhat cua bieu thuc
T= I ab-xy I / (x+y)x + I bc-yz I / (y+z)x + Ica-zxI / (z+x)y
ai lam duoc cau nay minh cong nhan la gioi
Chox,y,z>0,x+y+Z=2.Tim GTNN cua P=\(\frac{x^2}{y+z}+\frac{y^2}{x+z}+\frac{z^2}{x+y}\)
cho x3+y3+z3=3xyz va x+y+zkhac o .Gia tri cua bieu thuc p=(1+x/y).(1+y/z)+(1+z/x)la ....
Cho x,y,z>0 va x+y+z \(\le\)3.Tim GTNN cua P=\(x^2+y^2+z^2+\frac{20}{x+y+z}\)