CAS problem with solution

[Mark Hardman]

(03-04-2015 11:42 PM)Mark Hardman Wrote:  

(03-04-2015 11:08 PM)Helge Gabert Wrote:  What are your cas settings? I get 1.

But why would that make a difference?

To answer my own question.

With "Use i" unchecked:

simplify(√(x^2)) ----> |x|

With "Use i" checked:

simplify(√(x^2)) ----> x