xyz都是正数,且x²/(1+x²)+y²/(1+y²)+z²/(1+z²)=2,求证 x/(1+x²)+y/(1+y²)+z/(1+z²)
来源:学生作业帮助网 编辑:作业帮 时间:2024/12/02 14:45:59
xTN@ILLGB?ݴ@""Fb +$~Jәp҉]4aC⪝3=s{gTB7ҋ'uPU=;Q3VXzW^EԻp;Yt('g-BE ,d%J([ӖM,4RD+h
1 +F(M.0Ta9z=.:<,
ieh7ۭyO_T+fu<8,,sAbYc'Ely_*IQ?hPLxZZWhH*) px#]CM+_1U`S*8f(^
HqL
qO6\{*أ+CWKzBݻC`opT!=A$@ܩ_{:<#2t#b-