Package org.apache.commons.numbers.gamma
Class Trigamma
- java.lang.Object
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- org.apache.commons.numbers.gamma.Trigamma
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public final class Trigamma extends Object
Trigamma function. It is the derivative of thedigamma function
: \( \psi_1(x) = \frac{d^2}{dx^2} (\ln \Gamma(x)) \).