- #1
KleZMeR
- 127
- 1
I have an equation I am solving with Mathematica:
In:
DSolve[y''[t] +
Subscript[\[Omega], c]^2 y[
t] == -Subscript[\[Omega], c]^2 Subscript[v, d]*t +
Subscript[\[Omega], c]*Subscript[v, 0], y[t], t]
Out:
{{y[t] ->
C[2] Cos[t Subscript[\[Omega], c]] +
C[1] Sin[t Subscript[\[Omega], c]] + (
Subscript[v, 0] - t Subscript[v, d] Subscript[\[Omega], c])/
Subscript[\[Omega], c]}}
I would like to replace the two constants of integration(C[1], C[2]) with two chosen variables
If I include this with the DSolve command:
{C[1] -> (Voy/omega), C[2] -> ((Voy-Vd)/omega)},
it returns that I can not use these for variables.
I have also found a GeneratedParameters-> function, but it does not work either,.. and if I'm correct, the GeneratedParameters-> Module{C[1], C[2]..&} function is only to ensure that C[] values are all unique, and does not change their representation.
I am also wondering how to change the subscript of Vo into Voy, Mathematica is not letting me do this.
Again, any help would be appreciated
Thanks
In:
DSolve[y''[t] +
Subscript[\[Omega], c]^2 y[
t] == -Subscript[\[Omega], c]^2 Subscript[v, d]*t +
Subscript[\[Omega], c]*Subscript[v, 0], y[t], t]
Out:
{{y[t] ->
C[2] Cos[t Subscript[\[Omega], c]] +
C[1] Sin[t Subscript[\[Omega], c]] + (
Subscript[v, 0] - t Subscript[v, d] Subscript[\[Omega], c])/
Subscript[\[Omega], c]}}
I would like to replace the two constants of integration(C[1], C[2]) with two chosen variables
If I include this with the DSolve command:
{C[1] -> (Voy/omega), C[2] -> ((Voy-Vd)/omega)},
it returns that I can not use these for variables.
I have also found a GeneratedParameters-> function, but it does not work either,.. and if I'm correct, the GeneratedParameters-> Module{C[1], C[2]..&} function is only to ensure that C[] values are all unique, and does not change their representation.
I am also wondering how to change the subscript of Vo into Voy, Mathematica is not letting me do this.
Again, any help would be appreciated
Thanks