Casio fx-6500P Program Library 2025
Last birthday, I reviewed the rare classic, the Casio fx-6500G:
https://edspi31415.blogspot.com/2024/03/spotlight-casio-fx-6500g.html
Parabola Area and Maximum Point: Program P1: Steps 114
Area Under a Parabola set up by the equation:
y = -((x – a)*(x – b)) = -x^2 + p*x – q
p = a + b
q = a * b
Cls
“-((X-A)×(X-B))”
“A”? →A
“B”? → B
A+B → P
AB → Q
-B^3 ÷ 3 + B² P ÷ 2 – Q B + A^3 ÷ 3 - A² P ÷ 2 + Q A → R
“AREA:”
R ◢
“MAX PT:”
P ÷ 2 →X ◢
-((X-A)×(X-B)) → Y
The caret symbol ^ stands for [x^y].
Example:
y = -((x + 4) * (x – 2)) = -x^2 – 2*x + 8
A = -4, B = 2
Area: 36
Maximum Point: (-1, 9)
Circular Sector: Arc Length and Sector Area: Program: P2: Steps: 59
“RADIUS”? →R
“ANG(°)”? → T
RTπ÷180 →L
RL÷2 →A
“ARC LENGTH:”
L ◢
“AREA:”
A
The degree character is generated by the [° ‘ “] key.
Example:
R = 10.5, T (angle) = 120°
Results: Arc length = 21.99114858, Area = 115.45353
Integer Division: Program: P3: Steps: 51
“INT÷”
“X>0”? →X
“M>0”? →M
Int(X÷M)→Q
X-M×Q→R
Q ◢
“REM”
R
Examples:
43 Int÷ 11 = 3 Rem 10
7263 Int÷ 1849 = 3 Rem 1716
Hint: To find out the number of steps in a single program? Simply scroll down the last character and hold down the [ MDisp ] key. Kind of neat because this works outside of programming mode. I think this key was available on most Casio graphing calculators well into the fx-7700G (single G) and fx-9700Gα (E,M,H) series in mid 1990’s.
95% Population Proportion: Program P4: Steps: 96
X successes out of population N
“95 PRCT PROP”
“X”? → X
“N”? → N
X ÷ N → P
√(P(1-P))→ M
1.959963984 M ÷ √N → H
P – H → L
L + 2H → H
“LOW:”
L ◢
“HIGH:”
H
Example:
X = 850, N = 1176
Interval:
LOW: 0.6972058859
HIGH: 0.7483723454
Interval:
Source: HP 21S Stat/Math Calculator: Owner’s Manual. Hewlett Packard. 3rd Edition. June 1990.
Power Generated by a Wind Turbine: Program P5: Steps: 82
“WIND PWR”
“RADIUS (M)”? →R
“SPEED (M÷S)”? → V
“DENSITY”? →P
π × R² × P × V^3 ÷ 2 → W
“POWER:”
W
Example:
R = 8.18 m, V = 4.48 m/s, P = 1.2 kg/m³
Result: 11340.74989 W
Source: Sharp Electronics Corporation Conquering The Sciences: Applications for the SHARP Scientific Calculator EL-506A Sharp Corporation. Osaka, Japan. 1986. pp.75-77
Round to Nearest Integer (display only): Program P6: Steps: 11
?→N
Fix 0
Rnd
Norm
Examples:
N = 19.273 → 19
N = 44.8273 → 45
N = -2.82 → -3
That’s it. I wish you all a wonderful day. Thank you,
Eddie
All original content copyright, © 2011-2025. Edward Shore. Unauthorized use and/or unauthorized distribution for commercial purposes without express and written permission from the author is strictly prohibited. This blog entry may be distributed for noncommercial purposes, provided that full credit is given to the author.
