f_ibeta.ihlp

是一个经济学管理应用软件 很难找的 但是经济学学生又必须用到

{* 30nov2004}{...}
{phang}
{cmd:ibeta(}{it:a}{cmd:,}{it:b}{cmd:,}{it:x}{cmd:)} returns the
	cumulative Beta distribution for {it:a, b} > 0; returns 0
	unless 0 {ul:<} {it:x} {ul:<} 1.   This function is also known
	as the incomplete beta function I_{it:x}({it:a},{it:b}).{p_end}