HP 50g Graphing Calculator - Manual (Page 681)

Page 21-34
Examples of tagged output
Example 1 – tagging output from function FUNCa
Let’s modify the function FUNCa, defined earlier, to produce a tagged output.
Use ‚
@FUNCa to recall the contents of FUNCa to the stack. The original
function program reads
«
“Enter a: “ {“ :a: “ {2 0} V } INPUT OBJ→ → a
«
‘2*a^2+3‘
NUM » »
Modify it to read:
«
“Enter a: “ {“ :a: “ {2 0} V } INPUT OBJ→ → a
«
‘2*a^2+3‘
NUM
”F” →TAG » »
Store the program back into FUNCa by using „ @FUNCa. Next, run the
program by pressing @FUNCa. Enter a value of 2 when prompted, and press
` . The result is now the tagged result F:11.
Example 2 – tagging input and output from function FUNCa
In this example we modify the program FUNCa so that the output includes not
only the evaluated function, but also a copy of the input with a tag.
Use ‚
@FUNCa to recall the contents of FUNCa to the stack:
«
“Enter a: “ {“ :a: “ {2 0} V } INPUT OBJ→ → a
«
‘2*a^2+3‘
NUM
”F” →TAG » »
Modify it to read:
Note: For mathematical operations with tagged quantities, the calculator will
"detag" the quantity automatically before the operation. For example, the left-
hand side figure below shows two tagged quantities before and after pressing
the * key in RPN mode: