Instant Karma!

[sawastea]

new page

 

[samoth]

New post.

 

[anthrax]

Newest post

 

[samoth]

Witty retort.

 

[Lestat]

round 2

 

[anthrax]

Part 3

 

[samoth]

Random change of subject.

 

[anthrax]

Pi = 3.14159

 

[samoth]

y' + (1/2)y = 2 + t
µ(t)y' + (1/2)µ(t)y = (2 + t)µ(t)

µ(t) = e∫[p(t)dt] = et/2

et/2y' + (1/2)et/2y = 2et/2 + tet/2
d/dt[et/2y] = 2et/2 + tet/2
et/2y = ∫[2et/2 + tet/2]dt
et/2y = 4et/2 + ∫[tet/2]dt

 

[anthrax]

and what is the limit when x-->0 ?