xac dinh dau cua C biet 2a3bc trai dau voi -3a5b3c2
bai 1
xac dinh dau cua c ,biet rang 2a\(^3\)bc trai dau voi -3a\(^5\)b\(^3\)c\(^2\)
bai 2
cho day ti so bang nhau
\(\frac{2a+b+c+d}{a}=\frac{a+2b+c+d}{b}=\frac{a+b+2c+d}{c}=\frac{a+b+c+2d}{d}\)
tinh gia tri bieu thuc m voi
m=\(\frac{a+b}{c+d}=\frac{b+c}{d+a}=\frac{c+d}{a+b}=\frac{d+a}{b+c}\)
co ai biet xac dinh do thi ham so lam cach nao giup minh bai duoi voi minh bam cho
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
cho tam giac abc can tai A co A<90 do ke BD vuong goc voiAC (D€AC) ,CE vuong goc voi AB (E€AB) .goi I la giao diem cua bd va ce. c/m rang .a) ad=ae b)de//bc.c)goi m la giao diem cua bc .chung minh ba diem a,i,m thang hang .d)ai^2+be^2=ad^2+bi^2.
Biet lam chi giup minh phan d voi con ko biet thi thoi nhe 29 dang bai cac ban cu bao nghi de lam gi tet den gan sat dit ma ko lam nhanh thi dinh an tet nua hay thoi .Thong cam cho minh nhe nhe
Thank you cac ban chuc cac ban nam moi an lanh hoc that gioi nhe!
Nguon dien là gì dac diem là gì . So von ghi trên moi nguon dien co y nghĩa gi . Hieu dien the giua hai dau bong den cho biet gi .CAC BAN GIUP MINH BAI TAP NAY NHA
cho ti le thuc \(\frac{a}{b}\)=\(\frac{c}{d}\)
chung minh rang\(\frac{a}{b}\)=\(\frac{7a+5c}{7b+5d}\)[b+d khac 0]
cac ban co biet tai sao minh go dau cac chu cai thi chu cai do va dau deu bien mat khong? giup minh voi , cau hoi tren la 1 vi du
co 3 doi cong nhan duoc phan cong lam mot con duong,chieu dai moi doi duoc chia ti le voi 2,3,4 Nhung sau do khi tien hanh lam so nguoi cua moi doi thay doi nen chieu dai moi doi duoc chia lai ti le voi 3,5,8 Tim moi phan duoc chia luc dau biet trong canh chia sau co mot phan hon mot phan luc dau la 90m
GIUP MINH VOI