x2-2x+5
=x2-2x+1+4
=(x-1)2+4
Vì:
Min = 4 khi x=1
Các câu hỏi tương tự
Tim gia tri nho nhat cua cac bieu thuc sau:
a.(2x+1/3)^2-5/6
b.|2x-3|+|y-1/2|+3/4
tim gia tri nguyen cua x de bieu thuc 5-x/x-2 co gia tri nho nhat
Tim gia tri nho nhat cua bieu thuc
(x+1)^2+(y-2)^2+9
TIM GIA TRI LON NHAT CUA BIEU THUC :
C=2+12/3x/X+5/+4
TIM GIA TRI NHO NHAT CUA BIEU THUC
C= -15/ 4x / 3X+7/+3
tim gia tri nho nhat hoac lon nhat cua bieu thuc sau:
x^2+15/x^2+3
tim gia tri nho nhat cua bieu thuc sau:
A= |102-x| + |x-2|
voi gia tri nao cua bien thi bieu thuc sau co gia tri nho nhat,tim gia tri do
\(\left(x-2013\right)^2+\left(y-2014\right)^2-2015\)
Tim gia tri nguyen cua x đê bieu thuc M=\(\frac{2019x-2020}{3x+2}\)co gia tri nho nhat
gia tri nho nhat cua bieu thuc A= (x^2+5)^2+10 la Amax