HP 48gII hp 48gII_user's manual_English_E_HDPMSG48E67_V2.pdf - Page 667

As you can see, y is used first, then we use b, g, and Q, in that order. Therefore, for the purpose of this calculation we need to enter the variables in the inverse order, i.e., (do not type the following): Q ` g `b `y ` For the specific values under consideration we use: 23 ` 32.2 ` 3 `2 ` The program itself will contain only those keystrokes (or commands) that result from removing the input values from the interactive calculation shown earlier, i.e., removing Q, g, b, and y from (do not type the following): y ` b *„º g *2* Q „º™/ and keeping only the operations shown below (do not type the following): ` *„ *2* „º™/ Note: When entering the program do not use the keystroke ™, instead use the keystroke sequence: „°@)STACK @SWAP@. Unlike the interactive use of the calculator performed earlier, we need to do some swapping of stack levels 1 and 2 within the program. To write the program, we use, therefore: 2* „°@)STACK @SWAP STACK @SWAP@ / ` Opens program symbols Multiply y with b Square (b⋅y) Multiply (b⋅y)2 times g Enter a 2 and multiply it with g⋅ (b⋅y)2 Swap Q with 2⋅g⋅ (b⋅y)2 Square Q Swap 2⋅g⋅ (b⋅y)2 with Q2 Divide Q2 by 2⋅g⋅ (b⋅y)2 Enter the program The resulting program looks like this: « * SQ * 2 * SWAP SQ SWAP / » Page 21-18