- #1
maistral
- 240
- 17
NOTE: This isn't homework.
So I'm trying to integrate a really awkward integral with limits from a to infinity;
[itex]\int^{∞}_{30471.2729807}(\frac{83.1451 * 373.15}{X})-(\frac{83.1451 * 373.15}{X-30.4811353}-\frac{5534906.5380409}{X^2})dX[/itex]
Since the Simpson's and Trapezoidal would be really awkward to use with these (I literally used a limit of 30471.2729807 to 1000000000 (lol)) I tried to search for other alternatives, and I found this.
I can't understand how this is implemented though. This transformation
[itex]\int^{∞}_{a}f(X)dX → \int^{∞}_{0}f(X+a)dX[/itex]
is bothering me as well. Can someone point me where a step-by-step algorithm of the method's implementation is made; or if possible, someone tell me how it was done?
So I'm trying to integrate a really awkward integral with limits from a to infinity;
[itex]\int^{∞}_{30471.2729807}(\frac{83.1451 * 373.15}{X})-(\frac{83.1451 * 373.15}{X-30.4811353}-\frac{5534906.5380409}{X^2})dX[/itex]
Since the Simpson's and Trapezoidal would be really awkward to use with these (I literally used a limit of 30471.2729807 to 1000000000 (lol)) I tried to search for other alternatives, and I found this.
I can't understand how this is implemented though. This transformation
[itex]\int^{∞}_{a}f(X)dX → \int^{∞}_{0}f(X+a)dX[/itex]
is bothering me as well. Can someone point me where a step-by-step algorithm of the method's implementation is made; or if possible, someone tell me how it was done?