matlab中正太对数函数
时间: 2023-10-16 18:06:40 浏览: 49
在Matlab中,正太对数函数(Lognormal Distribution)是一种常见的概率分布函数。它的概率密度函数可以用lognpdf(x,mu,sigma)表示,其中x是变量,mu是均值参数,sigma是标准差参数。正太对数函数的数学形式为:
f(x) = (1/(x*sigma*sqrt(2pi))) * exp(-(log(x)-mu)^2 / (2*sigma^2))
这个函数在Matlab中可以用lognpdf(x,mu,sigma)来计算。其中,x是要计算的点,mu是均值参数,sigma是标准差参数。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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