41CL Quiz: Determinant of 30x30 anti-Identity matrix

[Claudio L.]

(05-11-2018 07:48 PM)John Keith Wrote:  HP 50g, exact mode:
Physical calculator: 61 seconds.

(05-12-2018 02:50 AM)Joe Horn Wrote:  Prime in CAS view: det(makemat(1,30,30)-IDENMAT(30))
Result: -29
Physical calculator (HW rev C): 0.041 seconds

...50g's approx mode ... -29.0000000000 in 14.17 seconds.

The 50g can do slightly better...
newRPL with numbers in the matrix: 0.426 sec (result = -29 exact if matrix elements were exact)
newRPL with symbolic numbers: 2.589 sec (more comparable to using the CAS mode in the Prime, result = '-29' symbolic)
So the Prime CAS is roughly 30 times more efficient than newRPL at working with symbolic expressions... there's a lot of work for me to do in that department.

EDIT:
P.S.: Sorry for polluting this thread, it felt like a continuation of the other anti-identity thread.