Uppgift 4.2: 16 

Typesetting:-mrow(Typesetting:-mi( 

Typesetting:-mrow(Typesetting:-mi( 

`+`(((`@@`(D, 2))(x))(t), `*`(13, `*`((D(y))(t))), `-`(`*`(4, `*`(x(t))))) = `+`(`*`(6, `*`(sin(t)))), `+`(((`@@`(D, 2))(y))(t), `-`(`*`(2, `*`((D(x))(t)))), `-`(`*`(9, `*`(y(t))))) = 0 (3.1)
 

Typesetting:-mrow(Typesetting:-mi( 

{y(t) = `+`(`*`(`/`(1, 2), `*`(cos(t))), `*`(_C1, `*`(sin(`+`(`*`(2, `*`(t)))))), `*`(_C2, `*`(cos(`+`(`*`(2, `*`(t)))))), `*`(_C3, `*`(sin(`+`(`*`(3, `*`(t)))))), `*`(_C4, `*`(cos(`+`(`*`(3, `*`(t)))...
{y(t) = `+`(`*`(`/`(1, 2), `*`(cos(t))), `*`(_C1, `*`(sin(`+`(`*`(2, `*`(t)))))), `*`(_C2, `*`(cos(`+`(`*`(2, `*`(t)))))), `*`(_C3, `*`(sin(`+`(`*`(3, `*`(t)))))), `*`(_C4, `*`(cos(`+`(`*`(3, `*`(t)))...
(3.2)
 

Typesetting:-mrow(Typesetting:-mi( 

x(0) = 0, (D(x))(0) = 1, y(0) = 1, (D(y))(0) = 0 (3.3)
 

Typesetting:-mrow(Typesetting:-mi( 

{y(t) = `+`(`*`(`/`(1, 2), `*`(cos(t))), `*`(`/`(16, 5), `*`(cos(`+`(`*`(2, `*`(t)))))), `-`(`*`(`/`(27, 10), `*`(cos(`+`(`*`(3, `*`(t)))))))), x(t) = `+`(`-`(`*`(`/`(5, 2), `*`(sin(t)))), `-`(`*`(`/`... (3.4)
 

Typesetting:-mrow(Typesetting:-mi( 

Plot_2d
 

Typesetting:-mrow(Typesetting:-mi( 

Plot_2d