Ta có: a/5 = b/4 = c/3
=>a3/125 = b3/64 = c3/27= a.b.c/5.4.3 = -480/60 = -8
=>a3=-8.125= -1000 = -103 =>a= -10
b3=-8.64= -512 = -83 =>b= -8
c3= -8.27= -216 = -63 =>c=-6
Tim gia tri lon nhat cua
\(B=\frac{4}{4x^2+12x+14}\)
xin loi de bai lan truoc minh danh sai nhe cac ban.Mau giai chi tiet giup minh voi minh dang can gap lam
Tim GTNN cua bt sau
a, lx-2l + l x+28l + lx-60l
b, lxl + lx-1l + lx-2l+...+lx-2004l
Cac ban giai chi tiet giup minh nhe, minh dang can gap.
Tinh:
\(A=1+\frac{3}{2^3}+\frac{4}{2^4}+\frac{5}{2^5}+...+\frac{100}{2^{100}}\)
cac ban giai chi tiet ra nha
Tim gia tri nho nhat
A=/x-2010/+/x-2011/
B=/x-1/+/x-2/+/x-3/+2011
C=5\(x^2\)+20x+2010
cac ban giai va cach trinh bay nhe
minh kich dung cho
giai giup minh voi
cac ban ho minh bai nay nha
\(A=\sqrt{x+2}+\frac{3}{11};B=\frac{5}{7}-3\cdot\sqrt{x-5}\)
giup minh lam bai nay nhe
cam on cac ban nhieu
Tim so nguyen duong a nho nhat sao cho cac phan so sau dong thoi la cac phan so toi gian :
\(\frac{4}{a+7}=\frac{5}{a+8}=\frac{6}{a+9}=\frac{7}{a+10}=\frac{8}{a+11}=\frac{9}{a+12}\)
minh can fan TFBOYS ai fan TFBOYS ket ban di nhe , cach giai nua , dua nao ghi ket qua thi bien di , ngua mat
sorry cac ban minh viet ko dau mong cac ban thong cam
tim 3 so tu nhien lien tiep, biet tong cac tich tung cap hay ba so ay bang 362
giai chi tiet giup minh, xin cam on
\(\frac{\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+....+\frac{1}{2011}}{\frac{2010}{1}+\frac{2009}{2}+\frac{2008}{3}+....+\frac{1}{2010}}\)
Cac ban giai giup minh voi minh minh kiem tr roi
giai co loi giai nha
minh kich dung cho
tìm x
a) x -7 = - 5
b) 128 - 3 . ( x + 4 ) = 23
c) [ ( 6x - 39 ) : 7 ] . 4 = 12
d) ( x : 3 - 4 ) . 5 = 15
cac ban oi giai giup minh nhe cam on
