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>stats_rand_gen_beta</H1
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>    (PECL)</P
>stats_rand_gen_beta&nbsp;--&nbsp;Generates beta random deviate</DIV
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>说明</H2
>float <B
CLASS="methodname"
>stats_rand_gen_beta</B
> ( float a, float b )<BR
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><P
>&#13;   Returns a random deviate from the beta distribution with parameters A and
   B. The density of the beta is x^(a-1) * (1-x)^(b-1) / B(a,b) for 0 &#60; x
   &#60;. Method R. C. H. Cheng.
  </P
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>参数</H2
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>&#13;   <P
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><CODE
CLASS="parameter"
>a</CODE
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>&#13;       Its description
      </P
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>b</CODE
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>&#13;       Its description
      </P
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>
  </P
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>返回值</H2
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>&#13;   What the function returns, first on success, then on failure. See
   also the &#38;return.success; entity
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