【gnuplot5】ガンマ関数と不完全ガンマ関数

それぞれgamma(x)とigamma(a, x)とかで呼び出せる

ヘルプは以下のような感じ

gnuplot> help gamma
The `gamma(x)` function returns the gamma function of the real part of its
argument. For integer n, gamma(n+1) = n!. If the argument is a complex
value, the imaginary component is ignored.

gnuplot> help igamma
The `igamma(a,x)` function returns the normalized incomplete gamma
function of the real parts of its arguments, where a > 0 and x >= 0.
The standard notation is P(a,x), e.g. Abramowitz and Stegun (6.5.1),
with limiting value of 1 as x approaches infinity. If the arguments
are complex, the imaginary components are ignored.

ランキング参加中です

↓クリックしていただけると嬉しいです〜