HP 35s User Manual page 238

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
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

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Example: Program Using Equation.
Write a program that uses an equation to solve the "Ideal Gas Law."
Keys:
(In RPN mode)
 
 
 
H
 

(1)

P 
V  
N 
R 
T 
 

Checksum and length of program: DF52 21
Now calculate the change in pressure of the carbon dioxide if its temperature drops
by 10 °C from the previous example.
15-4
Solving and Integrating Programs

value

value





Display:
 
  
  
 
 

Stores .005 in N; prompts for R.
Stores .0821 in R; prompts for T.
Calculates T.
Stores 297.1 in T; solves for P.
Pressure is 0.0610 atm.
Description:
Selects Program–entry mode.
Moves program pointer to top of
the list of programs.
Labels the program.
Enables equation prompting.
Evaluates the equation, clearing
flag 11. (Checksum and length:
EDC8 9).
Ends the program.
Cancels Program–entry mode.