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Full Version: (38G) 40G: Matrix Power Programme
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Edit: Amended to include negative powers.

Edit: Programme slightly more elegant.

Edit: Amended to avoid errors for some powers > 5*10^11.

A lack in the 38G & 40G (not the 40gs) is the inability to find integer powers ≠ 2 or -1 of matrices.

This programme supplies the lack.

Store the matrix to power in M1, enter the integer power on the stack in HOME view & activate the programme.

The powered matrix is recalled as Ans in HOME view & is also stored in M2.

M1 remains unchanged.

Ans►N:
IFTE(N<0,INVERSE(M1),M1)►M3:
ABS(N)►N:
SIZE(M1):
IDENMAT(Ans(1))►M2:
WHILE N
REPEAT
IF
N MOD 2
THEN
M3*M2►M2:
N-1►N:
END:
M3^2►M3:
N/2►N:
END:
M2:
Thank you Gerald for these programs. Programs for these calculators are few and far between.

François
(03-15-2015 04:45 AM)Francois Lanciault Wrote: [ -> ]Thank you Gerald for these programs. Programs for these calculators are few and far between.

François

Thanks for the recognition.

It would be nice if others published their programmes.
Just to advise of the latest edit to include negative powers.
Much gratitude, Gerald.
Just to advise of latest edit, avoiding errors for some powers > 5*10^11.
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