- #1
knockout_artist
- 70
- 2
Ok I have read/browse 3 books so far about PDEs.
They separate variables. Then they suddenly go.
solution is
X=
some thing sin
some thing cos
Y=
some thing -ek
some thing ek
Where do sine and cos comes from ?
How do they know?? where is it explained?
They separate variables. Then they suddenly go.
solution is
X=
some thing sin
some thing cos
Y=
some thing -ek
some thing ek
Where do sine and cos comes from ?
How do they know?? where is it explained?