HP Prime lockup (not a complaint)

[Anders]

parisse,

yes you are right, I think there are 2 problems possibly related:
- the basic square root function √ is broken for complex numbers (at least when differentiating) on its own unrelated to simplify. It would be great for it to be fixed in an update (The x^n and n√x works correctly on the same expression!)
- the simplify function should as you wrote have some sort of expression check prior trying to simplify to avoid lock-ups