求证设实数xy满足y+x^2=0若a大于0小于1证loga底(a
设实数x y满足y+x^2=0 若a大于0小于1 证loga底(a^x+a^y)小于等于loga底2+1/8 谢谢
∵y+x^2=0 ∴x+y=x-x^2=-(x-2)^2+1/4≤1/4 ∴x+y的最大值=1/4 ∵0