Các câu hỏi tương tự
goi a,b,c la cac canh cua 1 tam giac co 3 duong cao tuong ung la ha,hb,hc. cmr (a+b+c)^2/ha^2+hb^2+hc^2 lon hon hoac bang 4
CM 2a+3b=n (voi a,b,n thuoc N ;n lon hon hoac bang 2)
cho ba so a,b,c thoa man 0be honhoac bang a be hon hoac bang b+1 be hon hoac bang c+2 va a+b+c=1 tim gia tri nho nhat cua c
cac ban ơi giup mk
cho da thuc P(x) =ax +b (a,b thuoc Z , a khac 0 )
Nhung minh
P|(2019)-P(1)| luon lon hon hoac bang 2018
cho a,b,c la do dai 3 canh tam giac. cmr: can 3(a-c)(b-a)(c-b)/a.b.c lon hon bang 1/2
Tinh n biet qua diem B ve n duong thang phan biet (n lon hon hoac bang 2,n thuoc N) trong hinh ve co 870 goc doi dinh nho hon goc bet
Cho a lon hon 2, b lon hon 2.CMR ab lon hon a+b
tim x:
/ 5x - 3 / lon hon hoac bang 7
cho 2 diem B va C thuoc doan thang AD, M la 1 diem thuoc mat phang chung ming rang MA + MD lon hon hoac bang MB + MC