概率论 设X~fx(X),Y=-2X+1,则fy(y)=

日期:2015-06-15 02:33:51 人气:1

概率论 设X~fx(X),Y=-2X+1,则fy(y)=

f(y) = f(x)/|g'(x)| = f{(y-1)/(-2)}/2 = f{(1-y)/2}/2
    A+
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