\(A=\left|x-2018\right|+\left|x-2019\right|\)
\(=\left|\left(x-2018\right)+\left(2019-x\right)\right|\)
\(=\left|1\right|=1\)
Vậy \(A_{min}=1\Leftrightarrow\left(x-2018\right)\left(2019-x\right)\ge0\)
\(\Leftrightarrow2018\le x\le2019\)
Các câu hỏi tương tự
Cho truoc diem a va duong thang d di qua diem a ve 2018 duong thang phan biet . goi x la so duong thang vuong goc voi d, y la so duong thang khong vuong goc void trong 2018 duong thang da cho..
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a) tim gia tri nho nhat cua bieu thuc
A= | 2x-2 | + | 2x-2019 |
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A=|3,7-X|+2,5
B=|X+1,5|-4,5
tim gia tri lon nhat cua
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D=-3,7-|1,7-x|
Cac ban giup minh voi minh can nop gap
Tim gia tri nho nhat cua bieu thuc:
P= / x-1/+/x-2017/+/x-2018/
* Dau gach cheo la dau gia tri tuyet doi nhe
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tim gia tri nho nhat cua bieu thuc A =(x)+(8-x)