已知x>0,y.>0,且x+y=1,求下列最小值,(1)x^2+y^2 (2)1/x^2+1/y^2 (3)2/x+3/y (4) (x+1/x)*(y+1/y) (已知x>0,y.>0,且x+y=1,求下列最小值,(1)x^2+y^2 (2)1/x^2+1/y^2 (3)2/x+3/y(4) (x+1/x)*(y+1/y) (5)(x+1/x)^2+(y+1/y)^2 (6)(x+2)^2+(y+2)^ (7) (y+2)/(x+2)
问题描述:
已知x>0,y.>0,且x+y=1,求下列最小值,(1)x^2+y^2 (2)1/x^2+1/y^2 (3)2/x+3/y (4) (x+1/x)*(y+1/y) (
已知x>0,y.>0,且x+y=1,求下列最小值,(1)x^2+y^2 (2)1/x^2+1/y^2 (3)2/x+3/y
(4) (x+1/x)*(y+1/y) (5)(x+1/x)^2+(y+1/y)^2 (6)(x+2)^2+(y+2)^ (7) (y+2)/(x+2)
答