Credits | Overview | Plotting Styles | Commands | Terminals
--- | --- | --- | --- | ---

## Ibeta

ibeta(a,b,x) returns the normalized lower incomplete beta integral of real arguments a,b > 0, x in [0:1].

If the arguments are complex, the imaginary components are ignored. The implementation in gnuplot uses code from the Cephes library [Moshier 1989, "Methods and Programs for Mathematical Functions", Prentice-Hall].