记忆正态分布公式

R语言代码：python x <- seq(-2,2,0.1) par(mfrow=c(2,3)) plot(c(-2,2), c(0,8), type='n') lines(x, exp(x), col='red') plot(c(-2,2), c(0,8), type='n') lines(x, exp(abs(x)), col='red') plot(c(-2,2), c(0,8),

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