Name: Sun Qingfeng Date: 12/03/15-01:11:06 PM Z


It is known in Mathematica, for three expressions “1”, “r”, and “z”, the ordering strategy is
Input: Ordering[{1, r, z}]
Output: {1, 2, 3}

Before I load the FC9.0, The output is what I want:
Input: 1+r-z//Simplify
Output: 1+r-z

After loading the FC9.0
Input: 1+r-z//Simplify
Output: r-z+1

My question is:
How can I return the default output “1+r-z” when I work with FC?

Thanks a lot!