CAS problem with solution

[Helge Gabert]

My CAS settings are:

Angle radians
Number standard 12
Integers Decimal check
Simplify Minimum
Exact check
Use sqrt check
principal check
complex no check
use i check
increasing no check
recursive eval 5
recursive replace 1
recursive function 9
epsilon .00000000001
probability 1E-15
Newton 40

If you want, try it again with these settings. Do you still get -infinity?