符号积分方程组求解求助：含a、c的二元方程求解失败

Hey there! I totally get that diving into integral calculations and solving systems of equations can feel tricky when you're just starting out—let's break this down together.

From what you described, your approach makes perfect sense: you're working with double integrals over η and ξ, reducing them to functions of only a and c, then using two sets of data to set up a system to solve for those two unknowns. But you're hitting a wall with that final line of code.

To help you get past this, here are a few things to share or check:

• Share key code snippets & error details

  • Drop the code you're using, especially the final line that's failing, plus the parts where you set up the double integral (are you using scipy.integrate.dblquad? Nested quad calls?)
  • Let us know what error message you're getting—Is it a syntax error? A numerical integration convergence issue? Or a problem with the solver not recognizing your system of equations?
  • A quick description of your integrand function and the format of your two data sets would also go a long way.

• Quick self-checks you can run right now

  • Test your integral in isolation: Pick arbitrary values for a and c, run just the integral part, and see if it returns a valid number. This will confirm your integration logic isn't broken.
  • Verify your system of equations: Make sure when you plug in each data set, you end up with two well-formed equations (linear or nonlinear) that only involve a and c. Double-check that the dimensions match if you're using array-based calculations.
  • If you're using a solver like scipy.optimize.fsolve or root, confirm your objective function returns an array of residuals (the difference between your calculated values and the data points) and that you're starting with a reasonable initial guess for a and c.

Once you share those details, we can zero in on exactly what's going wrong with that final line!

内容的提问来源于stack exchange，提问作者user9488145