so sanh

333^444 va 444^333

tinh :

\(\frac{2^{50}.3^{61}+2^{90}.3^{16}}{2^{51}.3^{61}+2^{31}.3^{16}}\)

lam on giai dum mk cai nha!

mong nhan dc su giup do tu cac ban

2/3 va 2+n/3+n

so sanh do cac ban, nho lam ca cach giai cho minh nhe

cho hinh thang vuong abcd,ab=ad=cd/2;^a=^d=90  do.

so sanh ^dac va 2^acd

so sanh 2 phan so sau 124/40 va 36/45 hay giai thich vi sao ps do lon hon nhe

Cho tam giac ABC co goc A = 90 do.  Ve Tia phan giac Bd cua goc B ( D thuoc AC ). Tren canh BC lay E  cho BE = BA

 a) so sanh do dai doan AD va DE, so sanh goc EDC va ABC

b) cm AE vuong goc voi BD

1.Giai thich dc mot so hien tuong thuong gap do su truyen thang anh sang

2.So sanh thinh chat anh cua mot vat tao boi cac loai guong

3. Moi quan he giua do cao cua am voi tan so dao dong va do to cua am voi bien do dao dong

cho tam giac abc co goc A = 90 do , tia phan giac BD cua B (D thuoc AC) tren BC lay E sao cho BE=BA

a) so sanh do dai cac doan AD va DE , so sanh goc EDC va goc ABC

b) chung minh AE vuong goc BD

1.de do do dai mot doan thang ta lam nhu the nao?

2.nguoi ta lam the nao de so sanh do dai hai doan thang?

ai lam dung cho 1 like

doc lai cac cau co phep so sanh trong bai vuot thac da liet ke o cac bai tap tren . hay chon va phan tich tac dung goi hinh , goi cam cua 1trong so nhung phep so sanh do

. lam nhanh , mai co minh kiem tra ............