设α.β.γ满足0

设α.β.γ满足0 设α.β.γ满足0 设α,β满足条件-π/2 设α,β满足条件-π/2 设abc满足0 设数列{ Xn}满足0 设整数n满足0 设整数n满足0 设向量α,β,γ满足5(α-γ)+3(β+γ)=0,其中α=(-2,-1,3,0) β=(-2,-1,0,3) 求α+β+γ .设向量α,β,γ满足5(α-γ)+3(β+γ)=0,其中α=(-2,-1,3,0) β=(-2,-1,0,3) 求α+β+γ . 设实数x,y满足0 设事件A,B满足条件0 设数列{an}满足不等式0 设实数x,y满足0请给出计算, 设a,b,c满足0这应该是道奥数题… 设f(x)是连续函数,并且满足0 设f(x)=|lgx|,实数a,b满足0 概率论与数理统计：设x-n（0,1）,设x满足p{|x|>x} 设向量 α、β、γ满足条件：（α,β）=1,（α,γ)=3,(β,γ)=1且IIβII=2,求内积（α+β,2β-γ）.