为何SciPy通用积分方法命名为“quad”？双、三重积分命名规则同理？

Great question — this naming actually ties back to standard terminology in numerical analysis, not anything related to the "quad" you might associate with quadratic equations!

Here's the breakdown:

• The quad in SciPy's core integration function is short for "quadrature", a term used in numerical math to describe methods for approximating definite integrals. Quadrature techniques work by computing weighted sums of function values at specific points (think Gaussian quadrature, which is what quad uses under the hood for adaptive integration).
• For multi-dimensional integrals, SciPy extends this naming pattern:
  • dblquad combines "double" (for 2D integrals) with "quad" → double quadrature
  • tplquad combines "triple" (for 3D integrals) with "quad" → triple quadrature

It's a concise way to signal what the function does, using shorthand that's familiar to folks who work with numerical integration regularly. The lack of a direct mathematical link to "quad" (like squared terms) makes sense here — it's all about the numerical method's name, not algebraic notation.

内容的提问来源于stack exchange，提问作者muttyfut