repl.txt (574B)
1 2 {{alias}}( α, β ) 3 Returns the expected value of a beta prime distribution. 4 5 If `α <= 0` or `β <= 1`, the function returns `NaN`. 6 7 If `α` or `β` is `NaN`, the function returns `NaN`. 8 9 Parameters 10 ---------- 11 α: number 12 First shape parameter. 13 14 β: number 15 Second shape parameter. 16 17 Returns 18 ------- 19 out: number 20 Expected value. 21 22 Examples 23 -------- 24 > var v = {{alias}}( 1.0, 2.0 ) 25 1.0 26 > v = {{alias}}( 4.0, 12.0 ) 27 ~0.364 28 > v = {{alias}}( 8.0, 2.0 ) 29 8.0 30 31 See Also 32 -------- 33