HP 50g Graphing Calculator - Manual (Page 709)

Page 21-62
The following program calculates the summation
Using a DO…UNTIL…END loop:
« 0.
→ n S
« DO n SQ S +
‘S‘ STO n 1 – ‘n‘ STO UNTIL ‘n<0‘ END
S
“S” →TAG » »
Store this program in a variable @@S3@@. Verify the following exercises: J
3 @@@S3@@ Result: S:14 4 @@@S3@@ Result: S:30
5 @@@S3@@ Result: S:55 8 @@@S3@@ Result: S:204
10 @@@S3@@ Result: S:385 20 @@@S3@@ Result: S:2870
30 @@@S3@@ Result: S:9455 100 @@@S3@@ Result: S:338350
Example 3 – generate a list using a DO…UNTIL…END construct
Type in the following program
«
→ xs xe dx
« xe xs – dx / ABS 1. + xs
→ n x
« xs DO
‘x+dx’ EVAL DUP ‘x’ STO UNTIL ‘x
≥xe’ END n →LIST » » »
and store it in variable @GLIS3.
Θ Check out that the program call 0.5 ` 2.5 ` 0.5 ` @GLIS3
produces the list {0.5 1. 1.5 2. 2.5}.
Θ To see step-by-step operation use the program DBUG for a short list, for
example:
J 1 # 1.5 # 0.5 ` Enter parameters 1 1.5 0.5
[‘] @GLIS3 ` Enter the program name in level 1
„°LL
@)@RUN@ @@DBG@ Start the debugger.
Use @SST↓@ to step into the program and see the detailed operation of each
command.
∑
=
=
n
k
k S
0
2