\(\left(x-1\right)^2\ge0;\left|2y+2\right|\ge0\Rightarrow\left(x-1\right)^2+\left|2y+2\right|-3\ge-3\)
dấu = xảy ra khi \(\hept{\begin{cases}x-1=0\\2y+2=0\end{cases}\Leftrightarrow\hept{\begin{cases}x=1\\y=-1\end{cases}}}\)
vậy GTNN của C là -3 khi x=1, y=-1
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
c)C= \(3+|x-2|\)
d)D=\(5-|2x-1|\)
tim gia tri nho nhat hoac lon nhat cua cac bieu thuc sau
a)A=\(|x-4|-5\)
b)B=\(-|x+3|+7\)
Tim gia tri nho nhat cua bieu thuc: P=|x|+7
(x€Z)
Tim gia tri lon nhat cua bieu thuc :Q=9-|x|
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 cua x va y de bieu thuc C = -|x-2|-|y-3|-2009 co gia tri lon nhat ,tim gia tri lon nhat do
tim gia tri lon nhat cua cac bieu thuc sau
P = 3 - (x - 1)2
Tim gia tri cua x de bieu thuc A=|x-3|+(-100)co gia tri nho nhat ,tim gia tri nho nhat ay
a, tim gia tri nho nhat cua bieu thuc :\(A=\)\(|x+19|+|y-5|+1890\)
b,tim gia tri lon nhat cua bieu thuc:\(B=-|x-7|-|y+13|+1945\)
