sympy__sympy-13878

Precompute the CDF of several distributions where integration doesn't work well

Verdict: the issue points to the file or function that was changed (Tier B).

Below I list the distributions for which `cdf` does not perform well, with specific examples that can be used as tests after the `_cdf` methods are added.

The text points to the exact place to change: “Below I list the distributions for which `cdf` does not perform well, with specific examples that can be used as tests after the `_cdf` methods are added.”

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