K
kakashi_hatake


1 \leqa, b, c \leq 2
C/m
a, [TEX](a+b+c)^2.( \frac{1}{a}+ \frac{1}{b} + \frac{1}{c}) \leq 54[/TEX]
b, [TEX](a+b+c). ( \frac{1}{a}+ \frac{1}{b} + \frac{1}{c})^2 \leq 27[/TEX]
Mong mọi ng giúp nhanh!!!
C/m
a, [TEX](a+b+c)^2.( \frac{1}{a}+ \frac{1}{b} + \frac{1}{c}) \leq 54[/TEX]
b, [TEX](a+b+c). ( \frac{1}{a}+ \frac{1}{b} + \frac{1}{c})^2 \leq 27[/TEX]
Mong mọi ng giúp nhanh!!!
Last edited by a moderator: