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erfcx

Scaled complementary error function exp(x²) · erfc(x).

Syntax

Section titled “Syntax”
v = erfcx(x)

Description

Section titled “Description”

Returns exp(x²) · erfc(x) — useful for very large x where exp(x²) and erfc(x) would individually overflow / underflow.

Example

Section titled “Example”
erfcx(10)              % ≈ 0.0561

See also

Section titled “See also”
  • erfc — Complementary error function 1 - erf(x).
  • erf — Error function.