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2019-06-06 09:41:56 +0100 | asked a question | Numerical integration and plot failing I have a function which can be efficiently calculated on some interval on the real line and if I feed Sage with concrete arguments, Sage gives concrete numerical values. Nevertheless, if I try to integrate it numerically (or plot it), something goes terribly wrong and Sage is not able to calculate the values. In my case I get the error message The function itself is a solution to the cubic equation so it involves square root and a cubic root. is it some bug in sage and if there is some workaround? MINIMAL NON_WORKING EXAMPLE |