Chứng minh bất đẳng thức dựa vào tính chất bắc cầu
chung minh bat dang thuc dua vao tinh chat bac cau
Bai 15
3(a^2+b^2+c^2) lon hon hoac bang (a+b+c)^2 lon hon hoac bang 3(ab+bc+ca)
dang 3 chung minh bat dang thuc bang nhieu bc bien doi
Bai 16
X^2+y^2 lon hon hoac bang (x+y)^2/2lon hon hoac bang 2xy
bai 21
A)2(a^2+b^2)lon hon hoac bang (a+b)^2
B) 3(a^2+b^2+c^2) lon hon hoac bang (a^2+b^2+c^2)lon hon hoac bang 3 (ab +bc +ca)
Bai 15
3(a^2+b^2+c^2) lon hon hoac bang (a+b+c)^2 lon hon hoac bang 3(ab+bc+ca)
dang 3 chung minh bat dang thuc bang nhieu bc bien doi
Bai 16
X^2+y^2 lon hon hoac bang (x+y)^2/2lon hon hoac bang 2xy
bai 21
A)2(a^2+b^2)lon hon hoac bang (a+b)^2
B) 3(a^2+b^2+c^2) lon hon hoac bang (a^2+b^2+c^2)lon hon hoac bang 3 (ab +bc +ca)