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Quiz: calculating a definite integral
12-31-2013, 10:24 AM (This post was last modified: 12-31-2013 10:51 AM by peacecalc.)
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RE: Quiz: calculating a defined integral
Hello Thomas,

If I use fix 4 on the hp 15c (the very old version no LE) I get in some seconds a correct result (like N=20, some posts above), that shows the algorithem functions well.

Maybe the problems by fix 9 are caused by calculating the integrand: instead of \[ x^{-x} \] as \[ \exp(-x\cdot\ln(x)) \]. That have a great alteration rate near zero. The hp 15c algorithem don't calculate at the limits the value of the integrand, but for getting a higher precision it runs into a great number of calculations.


P.S. I have to correct myself, even with 0.01 or 0.1 it doesn't come to an end.
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RE: Quiz: calculating a defined integral - peacecalc - 12-31-2013 10:24 AM

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