Các câu hỏi tương tự
cho a,b,c>1.cmr \(\frac{a^2}{b-1}\)+\(\frac{b^2}{c-1}\)+\(\frac{c^2}{a-1}\)lon hon hoac bang 12
tim Mim A= a^3+b^3+c^3 biet : a,b,c lon hon hoac bang 1va a+b+c= 0
Cho a,b,c>0.CMR
\(\frac{1}{a^3+b^{2+}abc}+\frac{1}{b^3+c^3+abc}+\frac{1}{c^3+a^3+abc}\)be hon hoac bang\(\frac{1}{abc}\)
c/m voi 3 so thuc tuy y ta co
a2 cong b2 cong 1 lon hon hoac bang ab cong a cong b
cmr : a^2/b^2 +b^2/c^2+c^2/a^2 luon luon lon hon hoac bang c/b+ b/a+ a/c voi a,b,c lon hon 0
cho a,b,c la 3 canh cua mot tam giac cmr
A=\(\frac{a}{b+c-a}+\frac{b}{a+c-b}+\frac{c}{a+b-c}\)
lon hon hoac bang 3
làm ơn giúp tui với
Tim GTNN
x+1/x lon hon hoac bang 2
(mn giúp mih voi chi con 30p)
tim GTLN hoac GTNN cua bthuc
a) A=x2-6x+11
B=2x2+10x-1
c) 5x-x2
CMR so thuc a,b,c thi a^2+b^2+c^2+ab+bc+ca lon hon hoac bang 0