P = |x - 2014| + |x - 2013|
<=> |x - 2014| + |2013 - x|
Áp dụng BĐT |a| + |b| \(\ge\) |a + b| , có :
P \(\ge\) |x - 2104 + 2013 - x| = 1
=> Min = 1
<=> \(2013\le x\le2014\)
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 nho nhat cua : /2014-x/ + /2015-x/ +/2016-x/
Cho ham so f(x) = | x - 2014 | - | x + 2014 |
a, Chung minh rang f(x) = -f(-x)
b, Tim x de f(x) dat gia tri nho nhat, gia tri lon nhat
GIUP MIK VS
Tìm giá trị nguyên cua x de biểu thuc M= \(\frac{2014-x}{x-2013}\)có gia tri nho nhat
Cho M :x-2/x+3
a, Tim x € Z de M co gia tri nguyen
b, Tim x € Z de M la gia tri nho nhat . Tim gia tri nho nhat do
Tim gia tri nho nhat cua bieu thuc sau:
P=√(x-2011)2 +√(x-2012)2 +√(x-2013)2
tim gia tri nguyen cua x de bieu thuc 5-x/x-2 co gia tri nho nhat
Tim gia tri nguyen cua x de bieu thuc 42-x/x-15 co gia tri nho nhat
tim gia tri nho nhat cua
A=|3,7-X|+2,5
B=|X+1,5|-4,5
tim gia tri lon nhat cua
C=1,5-|x+1,1|
D=-3,7-|1,7-x|
