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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 nho nhat cua y de bieu thuc B=100-|y+3| co gia tri lon nhat, tim gia tri lon nhat do
cho A = 1/15 nhan 225/(8+2) + 3/14 nhan 196/(3x+6) (x thuoc Z; x khac -2 )
a) Rut gon A
b) Tim x thuoc Z de A thuoc Z
c) trong cac gia tri nguyen A tim gia tri lon nhat va gia tri nho nhat
tim gia tri lon nhat hoac nho nhat cua
a) A= GTTD 3x + 15 cong 20
CHO bieu thuc
B=17,58*43+57*17,58/293*A
a)tim gia tri cua bieu thuc Bkhi a=2
b)tinh gia tri a khi B=2
c)tim gia tri so tu nhien ad biet bieu thuc B co gia tri lon nhat ,gia tri lon do la bao nhieu
tim gia tri lon nhat cua A=2018-/x-7/-/y+2/
tim gia tri nho nhat cua B /x-500/+/x-300/
tim n thuoc Z,biet: a,3.n+2 chia het cho n-1; b, n^2 +5 chia het cho n+1
tim so tu nhien n de phan so B=10n-3 phan 4n-10 dat gia tri lon nhat tim gia tri lon nhat do
tim gia tri cua A lon nhat = 6/x^2 +3
giúp với
tim gia tri lon nhat B=3^2*10-/x+2/^3
