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分布f(x|u,b)=12bexp−|x−u|bf(x|u,b)=12bexp−|x−u|b代码%% laplace distribution % x : variable % b : size para %miu: location para syms x b miu fx = 1 / (2*b) * exp( -abs(x-miu)/b ); fx = subs(fx, {miu,b}, {...