Integrating a function involved error functions and a Gaussian kernel

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SUMMARY

The discussion centers on the integration of the function exp(-ax^2)*erf(bx+c)*erf(dx+f) from 0 to infinity. The user references a known result for the simpler case of exp(-ax^2)*erf(bx)*erf(cx), which yields arctan(b*c/sqrt(a*(b^2+c^2+a)))/sqrt(a*pi). The user seeks guidance on adapting this known solution to their more complex function. They inquire about systematic backtracking procedures to approach this integration problem effectively.

PREREQUISITES
  • Understanding of Gaussian functions and their properties
  • Familiarity with error functions (erf) and their applications
  • Knowledge of integration techniques, particularly improper integrals
  • Experience with mathematical analysis and function transformations
NEXT STEPS
  • Research advanced integration techniques for products of functions
  • Explore the properties and applications of the error function (erf)
  • Study systematic backtracking methods in mathematical problem-solving
  • Investigate the use of substitution methods in integrals involving Gaussian kernels
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Mathematicians, physicists, and engineers dealing with complex integrals involving Gaussian functions and error functions will benefit from this discussion.

bjteoh
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I am currently facing a problem of integrating
exp(-ax^2)*erf(bx+c)*erf(dx+f) with the integral boundaries 0 and
infinity.

I have gone through some handbooks but what I could locate is the integration of exp(-ax^2)*erf(bx)*erf(cx) from 0 to infinity which yields arctan(b*c/sqrt(a*(b^2+c^2+a)))/sqrt(a*pi).

I would really appreciate if anyone could guide me through solving this problem. Thanks.
 
Last edited:
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I was trying perform sort of educated guess based on arctan(b*c/sqrt(a*(b^2+c^2+a)))/sqrt(a*pi) - solution for the integration of exp(-ax^2)*erf(bx)*erf(cx) from 0 to infinity but no luck, since the one I need is a translated version for the above.

I am wondering is that any systematic back tracking procedure for that?
 
Last edited:

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