Recent content by all-black

yes.. my FD system produces tridiagonal equations.. i use this formula before, but still can't get the answer..

hye all... we know that in solving of finite difference methode of boundary value problem, the thomas algorithm is needed to solve it.. anyone here know how to use the thomas algorithm? thanks.

yess.. but not so deep.. just a basic of complex analysis..

ohh... i see... thank you micromass... but if you want to.. can you show how to solve this by using the polylogarithm? :)

i just found this and try to solve.. but then since i left all of these for many years, so i can't remember some of the ways.. i will keep thinking of this because I'm not able to solve it.. and this make me suffer.. ∫ x / (1 + ex) dx please help me to solve this.. :)

nice explanation..

ohh.. i see that.. sorry for the inconvenience also.. just a new member here..

i also confused with your earlier post..

1 century : 100 years 100 : 10000 years 15400000 : 1,540,000,000 is it?

did u mean this... 3 < a < 6..? so that the number of a is 3 and 4..

yeah.. i think so.. :smile:

Hallsofivy, i think there's a mistake.. the bold one..20(x−2)(x−5)/(1−2)(1−5)+4(x−1)(x−5)/(2−1)(2−5)+3(x−1)(x−2)/(5−1)(5−2) it is 5, not 3 right?

you can see the pattern if you play with the numbers many times..