Gunilla Kreiss: Differentialekvationer som matematiska ... - Skolverket
Gunilla Kreiss: Differentialekvationer som matematiska ... - Skolverket
Gunilla Kreiss: Differentialekvationer som matematiska ... - Skolverket
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@ UU/IT<br />
UU/IT<br />
Många fenomen beskrivs av<br />
differentialekvationer:<br />
Satellitbana: x(t),y(t)<br />
m "2 x<br />
"t 2 = g1 (x, y), x(0) = x "x<br />
0 ,<br />
"t (0) = u0 m "2 y<br />
"t 2 = g2 (x, y), y(0) = y "y<br />
0 ,<br />
"t (0) = v0 Newtons kraftekvation:<br />
massa acceleration = Kraft<br />
y<br />
(x 0 ,y 0 )<br />
o<br />
*<br />
(x(t),y(t))<br />
x<br />
5/14/12 | #4