Ìàðè13
Ñîîáùåíèå
#41695 11.10.2009, 16:49
 ïåðâîì ïðèìåíÿÿ ìåòîä âàðèàöèè ïîñòîÿííîé, âî âòîðîì ìàòðèöû è âåêòîðà
tig81
Ñîîáùåíèå
#41698 11.10.2009, 16:56
Ïðàâèëà ôîðóìà Âàøè èäåè, íàðàáîòêè ãäå?
Ìàðè13
Ñîîáùåíèå
#41700 11.10.2009, 17:08
ïî 1 ñíà÷àëà f(t)òîæä.ðàâåí 0,
ïî 2 V(t)=[ y(t) y'(t) ],
V(t)=[ V1(t) V2(t) ],
d\dt(V1(t)) òîæä. ðàâåí V2(t),
d\dt(V2(t)) òîæä.ðàâåí -V1(t)+ f(t),
V1"(t) òîæä.ðàâåí -V1(t)+f(t),
V1"+V1=f(t),
äàëüøå òðåáóåòñÿ íàéòè V1(t)
Killersmile
Ñîîáùåíèå
#116905 26.7.2022, 11:55
Great site i love it keep posting more!
fencingwichitaks.com