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Values of error
β
function, erf (β), and
complementary error Appendix 8
β
function, erfc (β), for
positive values of β
β
b erf (b) erfc (b) b erf (b) erfc (b)
0 0 1.0 1.4 0.952285 0.047715
0.05 0.056372 0.943628 1.5 0.966105 0.033895
0.1 0.112463 0.887537 1.6 0.976348 0.023652
0.15 0.167996 0.832004 1.7 0.983790 0.016210
0.2 0.222703 0.777297 1.8 0.989091 0.010909
0.25 0.276326 0.723674 1.9 0.992790 0.007210
0.3 0.328627 0.671373 2.0 0.995322 0.004678
0.35 0.379382 0.620618 2.1 0.997021 0.002979
0.4 0.428392 0.571608 2.2 0.998137 0.001863
0.45 0.475482 0.524518 2.3 0.998857 0.001143
0.5 0.520500 0.479500 2.4 0.999311 0.000689
0.55 0.563323 0.436677 2.5 0.999593 0.000407
0.6 0.603856 0.396144 2.6 0.999764 0.000236
0.65 0.642029 0.357971 2.7 0.999866 0.000134
0.7 0.677801 0.322199 2.8 0.999925 0.000075
0.75 0.711156 0.288844 2.9 0.999959 0.000041
0.8 0.742101 0.257899 3.0 0.999978 0.000022
0.85 0.770668 0.229332
0.9 0.796908 0.203092 b
0.95 0.820891 0.179109 erf (b) = p e − e 2 de.
2
1.0 0.842701 0.157299
1.1 0.880205 0.119795 o
1.2 0.910314 0.089686 erf (−b) =−erf (b).
1.3 0.934008 0.065992 erfc (b) = 1 − erf (b).
erfc (−b) = 1 + erf (b).