1 | initial version |

This is a known issue, see for example trac ticket 6862.

What you can do is to use the `assume`

function, as in the following:

```
sage: t1,t2,t4 = var("t1 t2 t4")
sage: assume(t2,'complex')
sage: t2.conjugate().simplify()
conjugate(t2)
sage: t2.real().simplify()
realpart(t2)
sage: t2.imag().simplify()
imagpart(t2)
```

2 | No.2 Revision |

This is a known issue, see for example trac ticket 6862, and ask question 2287.

What you can do is to use the `assume`

function, as in the following:

```
sage: t1,t2,t4 = var("t1 t2 t4")
sage: assume(t2,'complex')
sage: t2.conjugate().simplify()
conjugate(t2)
sage: t2.real().simplify()
realpart(t2)
sage: t2.imag().simplify()
imagpart(t2)
```

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