# HP 49g+ User Manual Page 705

Graphing calculator.

Using a FOR...NEXT loop:
0 → n S
0 n FOR k k SQ S + 'S' STO NEXT S "S" →TAG " "
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Store this program in a variable @@S2@@. Verify the following exercises: J
3 @@@S2@@
Result: S:14
5 @@@S2@@
Result: S:55
10 @@@S2@@
Result: S:385
30 @@@S2@@
Result: S:9455
You may have noticed that the program is much simpler than the one stored in
@@@S1@@. There is no need to initialize k, or to increment k within the program.
The program itself takes care of producing such increments.
The FOR...STEP construct
The general form of this statement is:
start_value end_value FOR loop_index program_statements
increment STEP
The start_value, end_value, and increment of the loop index can be
positive or negative quantities. For increment > 0, execution occurs as
long as the index is less than or equal to end_value. For increment < 0,
execution occurs as long as the index is greater than or equal to end_value.
Program statements are executed at least once (e.g.,
returns 1)
Example – generate a list of numbers using a FOR...STEP construct
Type in the program:
→ xs xe dx
xe xs – dx / ABS 1. + → n
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x dx STEP n →LIST " " "
and store it in variable @GLIS2.
4 @@@S2@@ Result: S:30
8 @@@S2@@ Result: S:204
20 @@@S2@@ Result: S:2870
100 @@@S2@@ Result: S:338350
1 0 START 1 1 STEP
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xs xe FOR x
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