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Programs for HP-48S



#6

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.


#7

Try here: http://www.hpcalc.org/ .

Cheers,

Michael

#8

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


#9

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.


#10

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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