# Precise Special Functions (ChatGPT App)

> High-precision math functions

- Type: app
- Publisher: Assaf Lanir
- Categories: Education
- Website: https://chatgpt.com/plugins/plugin_asdk_app_6a4ba3bfbb2c8191b11030adf9bcefbe
- Open in ChatGPT: https://chatgpt.com/plugins/plugin_asdk_app_6a4ba3bfbb2c8191b11030adf9bcefbe
- Version: 1.0.0
- Listed: 2026-10-04

## About

Precise Special Functions computes high-precision values of specialized mathematical functions: Bessel (J, Y, I, K), Riemann zeta, Gauss hypergeometric ₂F₁, complete elliptic integrals (K and E), and the Gamma function. Backed by arbitrary-precision arithmetic via mpmath — up to 1000 decimal digits. Suited for physics simulations, number theory, engineering calculations, and any context where a standard float or an inline code approximation is not precise enough. Every result is deterministic and cross-checkable against reference implementations. Ask naturally: "what is J₀(7.2) to 30 digits" and you get an exact value.

## How to use

1. **Add it in ChatGPT** Open Precise Special Functions in ChatGPT's Plugin directory (button above), select + to add it and sign in if asked.

2. **Use it in a chat** Type @ in the composer and pick Precise Special Functions, or start your message with its name. ChatGPT may also suggest it when it fits what you ask.

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