Timeline for What is the indefinite sum of tan(x)?
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| Oct 5, 2010 at 7:49 | comment | added | Herman Tulleken | Ok, a few quick tests in Matlab shows that even in the range $[0 \pi/2]$ that the indefinite sum of Taylor series does not converge. In light of what Oleg Eroshkin said below, this makes sense, so this method cannot be used for finding an approximation. | |
| Oct 4, 2010 at 16:05 | comment | added | Herman Tulleken | The indefinite integral (typically) requires the use of substitution, which exists because of the "nice" chain rule for differentiation. Differencing does not have a nice chain rule (there are some variants, but they do not help in this case). I'll play with truncated Taylor series and see where it gets me (I guess I should have tried that already). | |
| Oct 4, 2010 at 16:03 | history | edited | decomwe | CC BY-SA 2.5 |
added 113 characters in body
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| Oct 4, 2010 at 15:58 | history | answered | decomwe | CC BY-SA 2.5 |