Programs for HP-48S « Next Oldest | Next Newest »

 ▼ William N Strew Junior Member Posts: 13 Threads: 3 Joined: Jun 2012 07-09-2012, 08:06 PM Where can I find triangle solve and finding complex roots of polynomials programs for an HP-48S? I will need to manually input the programs since I do not have a serial cable. ▼ Michael Lopez Member Posts: 63 Threads: 9 Joined: Mar 2009 07-10-2012, 03:50 AM Try here: http://www.hpcalc.org/ . Cheers, Michael Eddie W. Shore Posting Freak Posts: 764 Threads: 118 Joined: Aug 2007 07-10-2012, 03:53 PM I have a few small programs: QD: (Quadratic Formula) - Credit goes to the document "1 Minute Marvels" by Wldoek Mier-Jedrzejowicz and Richard Nelson (They have this program named 'quad') Input: 3: A 2: B 1: C Output: 2: root 1 1: root 2 << 3 PICK / SWAP ROT -2 * / DUP SQ ROT - SQRT + LASTARG - >> SQRT: Square Root Law of Sines: sin(F1)/S1 = sin(F2)/S2. Apply this to any of the two sides and their corresponding angels. F represents theta which can be typed by pressing [alpha] [right shift] (F). (48S only?) LAWSIN: << 'SIN(F1)/S1=SIN(F2)/S2' STEQ 30 MENU>> Law of Cosines: A^2=B^2+C^2-2BC cos F LAWCOS: << 'SQ(A)=SQ(B)+SQ(C)-2*B*C*COS(F)' STEQ 30 MENU>> 30 MENU brings up the calculator's solver using whatever is stored in STEQ. Hope this helps, Eddie Edited: 13 July 2012, 7:18 p.m. after one or more responses were posted ▼ William N Strew Junior Member Posts: 13 Threads: 3 Joined: Jun 2012 07-11-2012, 12:01 AM Thank you. It does help. I went into HPCalc.org. Most of the programs are for download. Very few were text only which is what I needed. ▼ Eddie W. Shore Posting Freak Posts: 764 Threads: 118 Joined: Aug 2007 07-13-2012, 07:17 PM Quote: Thank you. It does help. I went into HPCalc.org. Most of the programs are for download. Very few were text only which is what I needed. Very cool. I finally got the cubic formula done, CU, which requires QD (see above). << - > A B C D << C 3 A * / B SQ 9 A SQ * / - 'Q' STO C B * A SQ / 3 D * A / - 6 / B 3 ^ 27 A 3 ^ * / - 'R' STO R Q 3 ^ R SQ + SQRT + 3 XROOT 'S' STO R Q 3 ^ R SQ + SQRT - 3 XROOT 'T' STO S T + B 3 A * / - 'X' STO X B A X * + C B X * + A X SQ * + QD {Q,R,S,T,X} PURGE >> >> Edited: 13 July 2012, 7:18 p.m.

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