Các câu hỏi tương tự
cho x,y thuoc R khac 0 thoa man 2x^2 + y^2/4 +1/x^2 = 4. tim gtnn gtln cua A= 2008+xy
cho cac so thuc x,y thoa man x^2+y^2-xy-9 tim GTNN cua P= x^2+y^2
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cho cac so thuc x,y thoa man x^2+y^2-xy-9 tim GTNN cua P= x^2+y^2
help meeeeeeeeeeee
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
cho hai so duong xy thoa man \(\frac{4}{x^2}+\frac{5}{y^2}\ge9\) tim gia tri nho nhat cua bieu thuc\(Q=2x^2+\frac{6}{x^2}+3y^2+\frac{8}{y^2}\)
cho cac so thu cx,y thoa man 4/x^2+5/y^2 >=9 tim GTNN cua bt
Q=2x^2+6/x^2+3y^2+8/y^2
giai ho minh voi minh can gap lam ai tra loi minh tich cho
1 tim cac so nguyen x thoa man 1 trong cac dieu kien sau
a) 2x+1 la scp
b) 4x=1 la scp
c)8x+1 la scp
2 tim nguyen tu nhien cua phuong trinh x^2-y^2=y+1
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 la hai so thoa man 2x^2 + 1/x^2 +y^2/4 =4. Tim Max A= xy