Two integration test suites For some history of the two integration test suites see [1]. An implementation for SymPy can be found at github [2]. The results are listed at [3].
Running the test suites I found some examples which seem to need special attention by the developers: [161] Timofeev integrand : 1/(3*cos(x)**2 + 2) antideriv : sqrt(10)*(x - atan(3*sin(x)*cos(x)/(3*cos(x)**2 + 2 + sqrt(10))))/10 integrator: ValueError: logarithm of a negative number [164] Timofeev integrand : (a**2 - 4*cos(x)**2)**(3/4)*sin(2*x) antideriv : (a**2 - 4*cos(x)**2)**(7/4)/7 integrator: RuntimeError: maximum recursion depth exceeded while calling a Python object [181] Timofeev integrand : sec(x)**2*log(cos(x)) antideriv : -x + log(cos(x))*tan(x) + tan(x) sympy : Integral(sec(x)**2*log(cos(x)), x) comment : Unevaluated! time : 47 min [1] http://luschny.de/math/quad/IntegralTestsSage.html [2] https://github.com/PeterLuschny/CharlwoodTest [3] http://luschny.de/math/quad/IntegralTestsSympy.html Peter -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sympy. For more options, visit https://groups.google.com/groups/opt_out.
