C=\(^{5x^2+20x+2010}\)
Vì C \(\ge\)2010
Nên GTNN của C là 2010
Khi \(5x^2+20x=0\)
x=0
A=XÉT \(X\le201Ó\)
TA ĐC X-2010+X-2011=2010-X+2011-X
<=>4021-2X
=>CÓ X\(\le\)2010 =>-X\(\le\) 2010 =>-2X\(\ge\)-4021
DẤU '' ='' XẢY RA KHI X=2010
B.,
C=\(^{5x^2+20x+2010}\)
Vì C \(\ge\)2010
Nên GTNN của C là 2010
Khi \(5x^2+20x=0\)
x=0
A=XÉT \(X\le201Ó\)
TA ĐC X-2010+X-2011=2010-X+2011-X
<=>4021-2X
=>CÓ X\(\le\)2010 =>-X\(\le\) 2010 =>-2X\(\ge\)-4021
DẤU '' ='' XẢY RA KHI X=2010
B.,
Cac ban oi giup minh voi
tim x biet 6.4/x=x/99tim cac so nguyen biet (|x|-3)(x^2+4) be hon hoac bang 4hai dia diem a va b cach nhau 90kmhai nguoi di xe dap cung mot luc tu ava bde gap nhau va ho gap nhau cach a 50km;nhung neu nguoi di tu b di nhanh hon xuat phat truoc nguoi a 1 gio thi ho gap nhau cach a 350/9km tinh van toc moi nguoiCac giai ho minh voi minh se tick cho
Cac ban nho viet ho cach lam min voi
tim gia tri nho nhat
1)\(A=\left|x-1010\right|+\left|x-1011\right|\)\
2)\(B=\left|x-1\right|+\left|x-2\right|+\left|x-3\right|+2011\)
3)\(C=5x^2+20x+2010\)
Giup minh giai bai nay nha
3-x/5-x=x/x+1
Trinh bay voi nha neu dung thi minh tick
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
Giai giúp minh voi! 1 cau cung duoc ( Abs (x) la tri tuyet doi cua x vi may minh khong go duoc dau tri tuyet doi )
Tim gia tri nho nhat
a Abs(x-1/4) + Abs(x-3/4)
b. Abs(x-1) + Abs(x-2) + Abs(x-5)
Tim x
Abs(x-3/2) + Abs(2,5-x) = 0
Abs(3x-1) = Abs(4-x)
Abs(2x+3) = x+3
tim nghiem cua da thuc: 3x2- x
(minh muon xem cach trinh bay cua minh dung ko nen cac ban lam giup minh nhe)
A=|x-2| tim gia tri nho nhat
giup minh voi
tim x biet:\(\frac{1+2y}{8}=\frac{1+4y}{24}=\frac{1+6y}{6x}\)
nho trinh bay cach giai nhe cac ban
\(\frac{\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+....+\frac{1}{2011}}{\frac{2010}{1}+\frac{2009}{2}+\frac{2008}{3}+....+\frac{1}{2010}}\)
Cac ban giai giup minh voi minh minh kiem tr roi
giai co loi giai nha
minh kich dung cho