The procedures in this document use the following text to represent symbol keys:
Key

Description

Text representation


Right shift key

RS


Leftshift key

LS


Divide

divide

Key

Description

Text representation


Right shift key

RS


Leftshift key

LS


Divide

divide

Keys

Display

Description

Press LS, then PRGM


Enters Program mode

Press RS, then CLPRGM

00

Clears program memory

Press RS, LBL, then C

01 61 41 C

Names program "C"

Press STO, then 2

02 21 2

Stores the displayed value (x_{2}) in R_{2}

Press LS, then SWAP

03 51 31

Swaps (x_{2} for x_{1})

Press STO, then 1

04 21 1

Stores displayed value (x_{1}) in R_{1}

Press C

05 71

Clears display so there is no hidden value or : annunciator when program is complete

Press RCL, then 2

06 22 2

Recalls x_{2}

Press XEQ, then 5

07 41 5

Executes subroutine to calculate x_{2}_{2}  sin x_{2}

Press []

08 65

(x_{2}_{SINX}2) 

Press RCL, then 1

09 22 1

Recalls x_{1}

Press XEQ, then 5

10 41 5

Executes subroutine again to calculate x_{1}^{2}  sin x_{1}

Press =

11 74

(x_{1}^{2}  sin x_{2})  (x_{1}_{2}>  sin x_{1})

Press divide

12 45

Divides result by ...

Press (

13 33

Reorders precedence

Press RCL, then 2

14 22 2

Recalls x_{2}

Press []

15 65

x_{2}  ...

Press RCL, then 1

16 22 1

Recalls x_{1}. Closing parenthesis not required because = follows.

Press =

17 74

((x_{2}^{2}  sin x_{2})  (x_{2}^{2}  sin x_{1})) / (x_{2}  x<_{1})

Press R/S

18 26

Stops

Press RS, LBL, then 5

19 61 41 5

Label 5 starts the subroutine

Press STO, then 0

20 21 0

Stores the displayed value in R_{0}

Press (

21 33

Reorders priority

Press LS, then x^{2}

22 51 11

Squares the displayed value

Press []

23 65

Subtracts

Press RCL, then 0

24 22 0

Recalls contents of R_{0}

Press SIN

25 23

Calculates the sine

Press )

26 34

Closing parenthesis required to evaluate x^{2}  sin x

Press RS, then RTN

27 61 26

Ends subroutine and returns to line following originating XEQ

Press LS, then SHOW

7EE9

Checksum (see Checksum below)

Press LS, then PRGM


Exits Program mode
