Tim gia tri nho nhat hoac gia tri lon nhat cua bieu thuc D = (x + 5)^2 + (2y - 6)^2 + 1
Tim gia tri lon nhat hoac nho nhat cua cac bieu thuc sau
a, C=(x-1)2+\(|2y+2|\)-3
tim gia tri lon nhat hoac nho nhat cua cac bieu thuc sau
c)C= \(3+|x-2|\)
d)D=\(5-|2x-1|\)
Cho x. Thuoc (-2 , -1 , 0 , 1 ,,2 , ....... ,11)
Y thuoc ( -89 , -88 , .... , 0. , 1
Tim gia tri lon nhat ( GTLN) va gia tri nho nhat ( GTNN)cua hieu x-y
tim gia tri lon nhat hjoac nho nhat cua/x-1/ +/x-2/=A
tim gia tri lon nhat hoac nho nhat cua
a) A= GTTD 3x + 15 cong 20
Cho x thuoc { -2 ; -1 ; 0 ; 1 ; ........; 11 }
y thuoc { -89 ; -88 ; -87 ;.........; -1 ; 0 ; 1 }
tim gia tri lon nhat ( GTLN ) va gia tri nho nhat ( GTNN ) cua hieu x - y
Tim gia tri nho nhat cua y de bieu thuc B=100-|y+3| co gia tri lon nhat, tim gia tri lon nhat do
tim gia tri lon nhat cua A=2018-/x-7/-/y+2/
tim gia tri nho nhat cua B /x-500/+/x-300/
tim n thuoc Z,biet: a,3.n+2 chia het cho n-1; b, n^2 +5 chia het cho n+1
