Hp 49g+ User Manual download pdf (Page 697)

If you are in the BRCH menu, i.e., („°@)@BRCH@ ) you can use the following

shortcuts to type in your CASE construct (The location of the cursor is

indicated by the symbol  ):

• „@)CASE@: Starts the case construct providing the prompts: CASE

 THEN END END

• ‚@)CASE@: Completes a CASE line by adding the particles THEN  END

Example – program f

(x) using the CASE statement

The function is defined by the following 5 expressions:

Using the CASE statement in User RPL language we can code this function as:

« → x « CASE ‘x<3‘ THEN ‘x^2‘ END ‘x<5‘ THEN ‘1-x‘ END

‘x<3*π‘ THEN ‘SIN(x)‘ END ‘x<15‘ THEN ‘EXP(x)‘ END –2 END

Store the program into a variable called @@f3c@. Then, try the following

1.5 @@f3c@ Result: 2.25 (i.e., x

2.5 @@f3c@ Result: 6.25 (i.e., x

4.2 @@f3c@ Result: -3.2 (i.e., 1-x)

5.6 @@f3c@ Result: -0.631266… (i.e., sin(x), with x in radians)

12 @@f3c@ Result: 162754.791419 (i.e., exp(x))

23 @@f3c@ Result: -2. (i.e., -2)

Hp 49g+ User Manual Page 697