Hello Everyone,
I know numerical integration isn't great in SAGE, but I think the
following isn't too complicated. I try
sage: numerical_integral(imaginary(gamma(1-I*t)),-15,15)
which fails, and give a LONG error message. I won't put the whole
thing here, but it starts:
ERROR: An unexpected error occurred while tokenizing input
The following traceback may be corrupted or invalid
The error message is: ('EOF in multi-line statement', (35, 0))
---------------------------------------------------------------------------
TypeError Traceback (most recent call
last)
/Users/ianpetrow/<ipython console> in <module>()
/Applications/sage/local/lib/python2.6/site-packages/sage/gsl/
integration.so in sage.gsl.integration.numerical_integral (sage/gsl/
integration.c:1622)()
/Applications/sage/local/lib/python2.6/site-packages/sage/symbolic/
expression.so in sage.symbolic.expression.Expression._fast_float_
(sage/symbolic/expression.cpp:29478)()
/Applications/sage/local/lib/python2.6/site-packages/sage/symbolic/
expression_conversions.pyc in fast_float(ex, *vars)
1212 1.4142135623730951
1213 """
-> 1214 return FastFloatConverter(ex, *vars)()
1215
1216 #################
etc etc etc, and says at the end
TypeError: cannot convert I to real number
Whereas on the other hand,
numerical_integral(imaginary(1+I*t),-15,15)
(0.0, 2.4968976137148349e-12)
works just fine. What gives? I'm running version 4.6 in OS X.
Thanks,
Ian
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