(38G) 40G: Matrix Power Programme

03132015, 06:11 PM
(This post was last modified: 06152017 01:59 PM by Gene.)
Post: #1




(38G) 40G: Matrix Power Programme
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: N1►N: END: M3^2►M3: N/2►N: END: M2: 

03152015, 04:45 AM
Post: #2




RE: HP 38G & 40G: Matrix Power Programme
Thank you Gerald for these programs. Programs for these calculators are few and far between.
François 

03202015, 12:58 PM
(This post was last modified: 03202015 12:59 PM by Gerald H.)
Post: #3




RE: HP 38G & 40G: Matrix Power Programme  
03242015, 08:05 AM
Post: #4




RE: HP 38G & 40G: Matrix Power (New  Includes Negative Powers) Programme
Just to advise of the latest edit to include negative powers.


03302015, 01:35 PM
Post: #5




RE: HP 38G & 40G: Matrix Power (New  Includes Negative Powers) Programme
Much gratitude, Gerald.


05182016, 10:08 AM
Post: #6




RE: HP 38G & 40G: Matrix Power Programme
Just to advise of latest edit, avoiding errors for some powers > 5*10^11.


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