x^2+y^2-x+6y+10
=(x^2-x+1/4)+(y^2+6y+9)+3/4
=(x-1/2)^2+(y+3)^2+3/4
Mmin=3/4 khi x=1/2; y=-3
x^2+y^2-x+6y+10
=(x^2-x+1/4)+(y^2+6y+9)+3/4
=(x-1/2)^2+(y+3)^2+3/4
Mmin=3/4 khi x=1/2; y=-3
\(x^{^2+}y^2-x-6y+10\)\(\)tim gtnn va gtln
tim gia tri nho nhat cua x^2+y^2-x+6y+10
cho 2 so x va y thoa man 3x+y=1
a) Tim GTNN cua bt M=3x^2+y^2
b) Tim GTLN cua bt N=x*y
tim gt nho nhat cua bieu thuc của x2+y2-x+6y+10
tim gt nho nhat cua bieu thuc của x2+y2-x+6y+10
cho hai x ,y thoả mãn x^2+y^2-4x+3=0 tim gtnn,GTLN cua m= x^2+y^2.thanksssssssssssss mọi người
cho x>0,y>0, x+y=2012.
a, tim GTLN cua A= (2x^2+8xy+2y^2)/ (x^2+2xy+y^2)
b, tim GTNN cua B=(1+(2012/x))^2+(1+(2012/y))^2
Cho x+y=z=3;\(A=x^2+y^2+z^2;B=xy+yz+xz\) a) C/M:\(A\ge B\) b) tim GTNN cua A c)tim GTLN cua B d) timf GTNN cua A+B
cho √x + √y =4 tim gtln cua (√x +1 ) (√y + 2 )