<https://lh6.googleusercontent.com/-BDfI2b3v4HA/T7SRx5zaqBI/AAAAAAAAAGo/Q6NEGFw8xQw/s1600/Screenshot+from+2012-05-17+00%3A50%3A25.png>
I don't know how to get sage to understand "domain : complex" so I tried
with assume and here is what happened. Does it make sense?
On Sunday, May 13, 2012 10:46:41 PM UTC-5, ketchers wrote:
>
> Sage returns negative value for the integral of a positive function
> x*cos(x^3) on (0,0.5), if I use abs(cos(x^3))*x, then it gets it correct?
>
>
> <https://lh5.googleusercontent.com/-I4qTKDmrY3E/T7CACU7fe_I/AAAAAAAAAGY/LELSMCMv0eU/s1600/Screenshot+from+2012-05-13+22%3A45%3A05.png>
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