ok i have to do a bunch of problems on excel using Euler's method, modified Euler's and fourth order Runge kutta method? i was wondering if anyone knew of a good tutorial.
it probably doesnt, i was just having a hard time getting excel to back up what i was doing on paper. i solved the differential equation using bernouli, but as i went from euler's method to runge kutta my numbers were getting worse. ok so my equation was y'=2y-y^2.
using bernouli or even separation of variables, i found....
so Y(1) was approximately 1.29757....
euler method was ok, i found Y(1) was 1.27 something....
my problem came when i tried using improved euler and runge kutta
I have checked what you call improved Euler and with a time step of 0.1, and initial condition f(0)=2/5 get f(1)~=1.285 (see attachment).