Các câu hỏi tương tự
1/Tim GTLN cua bieu thuc \(M=\frac{4x^2}{x^4+1}\)
2/ Biet x+y =2. GTNN cua bieu thuc A=3x2+y2 là?
ban nao giai cho minh thi minh xin tang ban do 20 like.
1. cho x+y=7 va xy=8 gia tri cua bieu thuc x3+y3 = ?
2. gia tri lon nhat cua bieu thuc B= 1+3x-x2 la ?
1. cho x+y=7 va xy=8 gia tri cua bieu thuc x3+y3 = ?
2. gia tri lon nhat cua bieu thuc B= 1+3x-x2 la ?
cho x+y =1 . tinh gia tri cua bieu thuc A=x^3+y^3+3xy
chox-y=1. tinh gia tri cua bieu thuc B=x^3-y^3-3xy
cho x+y=1 . tinh gia tri cua bieu thuc C=x^3+y^3+3xy(x^2+y^2)+6x^2*y^2(x+y)
bai 1:tim GTNN cua bieu thucAx2+3x+7B(x-2)(x-5)(x2-7x-10)bai 2:tim GTLN cua bieu thucA11-10x-x2B[x-4](2-[x-4])bai 3:tim x,y sao choA2x2+9y2-6xy-6x-12y+2016 co GTNNB-x2+2xy-4y2+2x+10y-8 co GTLNbai 4 :a)cho x+y3;x2+y25.tinh x3+y3b)cho x-y5;x2+y215.tinh x3-y3
Đọc tiếp
bai 1:tim GTNN cua bieu thuc
A=x2+3x+7
B=(x-2)(x-5)(x2-7x-10)
bai 2:tim GTLN cua bieu thuc
A=11-10x-x2
B=[x-4](2-[x-4])
bai 3:tim x,y sao cho
A=2x2+9y2-6xy-6x-12y+2016 co GTNN
B=-x2+2xy-4y2+2x+10y-8 co GTLN
bai 4 :
a)cho x+y=3;x2+y2=5.tinh x3+y3
b)cho x-y=5;x2+y2=15.tinh x3-y3
Cho x2+y2=20. Tim GTNN cua Bieu thuc P=1/x2 + 1/y2. Mình cần gấp lắm, ai nhanh và đúng mình comment cho.
Cho x,y,z la cac so thuc duong thoa man x + y + z = 6
Tim GTNN cua bieu thuc P = ( x + y )/(xyz)
ap dung bdt co si tim gtnn cua bieu thuc y=x/3 +5/2x+1;x>1/2
Cho x,y,z > 0. Tim GTNN cua bieu thuc: P=x/y+z + y/z+x + z/x+y