Recent content by Cypeq

Thx for your answers @nanuath: x2,n is ofcourse value of x2 at n-th step meaning current velocity. if i made some confusion by my writing ki are solving value of x(t) = x1 which can be seen as possition and the li are solving first derrivative of possition x'(t) = x2 which can be seen as...

Hello, i have a bit of a problem with uderestanding how exactly we use RK4 method for solving 2nd order ODE. And last conversation with my proffesor only added up to my confiusion. Further more i couldn't find any example dealing with this problem if any1 could provide link explaining this...

ax^{''} = 0 characteristic eqation ar^{2} = 0 r_{1,2} = 0 since we have double result x(t) = c_{1}e^{0t} + c_{2}t e^{0t} so e^0 = 1 x(t) = c_{1} + c_{2}t is this a correct result :S ? I'm learning integration by myself and I'm not shure about this case it's not cover in my book if...

big thanks it took me some time how to get this results but u helped me a lot thanks mate :)

Hi i have to solve this ODE which descirbes motion of forced oscillator with dumping and constant friction :p I'm already solving it numerically with Runge-Kutta 4 yet I'm totaly puzzeled how to do it analytically. equation: mx'' + kx' + w^2_0x + F_f = A cos(\delta t) Ff delta k and...