1 | initial version |

You can get the dummy variable by

```
dummy_var = sols[0].rhs().variables()[0]
```

And then define a callable function changing the dummy variable to a proper symbolic one.

```
var('z')
f(z) = sols[0].rhs().subs({dummy_var:z})
```

Now you can simply do `f(0)`

, `f(1)`

or whatever you want.

PS, for some reason it does not work if you try to define a callable function using the dummy variable directly, like

```
f(dummy_var) = sols[0].rhs()
```

2 | No.2 Revision |

You can get the dummy variable by

```
dummy_var = sols[0].rhs().variables()[0]
```

And then define a callable function changing the dummy variable to a proper symbolic one.

```
var('z')
f(z) = sols[0].rhs().subs({dummy_var:z})
```

Now you can simply do `f(0)`

, `f(1)`

or whatever you want.

PS, for some reason it does not work if you try to define a callable function using the dummy variable directly, like

```
f(dummy_var) = sols[0].rhs()
```

EDIT:

Another possibility is to use the `solveset`

from `sympy`

```
from sympy import solveset
solveset(sy(t)._sympy_())
```

It gives the solution as a union of sets.

Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.