Sharp EL-5250, EL-5230 operation manual Program code, Key operations, Example, Result

Chapter 8: Application Examples

Program code	Key operations
H=X√Œ+Y√Œ-X…Œ-Y…Œ	; H ; = @ v 2 A
	+ @ v 3 A - @ v
	d d d d X3 e e A
	- @ v d d d d d
	Y3 e e A e
I=X≥-X√	; I ; = @ v 0 -
	@ v 2 e
J=X√-X…	; J ; = @ v 2 -
	@ v 4 e
K=Y≥-Y√	; K ; = @ v 1 -
	@ v 3 e
M=Y√-Y…	; M ; = @ v 3 -
	@ v 5 e
X=(GM-HK)©2(IM-JK)	; X ; = ( ; G ; M -
* Perform equation 1.	; H ; K ) z 2 ( ; I
	; M - ; J ; K ) e
Print X	i 0 ; X e
Wait	i 3 e
Y=(GJ-HI)©2(KJ-MI)	; Y ; = ( ; G ; J -
* Perform equation 2.	; H ; I ) z 2 ( ; K
	; J - ; M ; I ) e
Print Y	i 0 ; Y e
Wait	i 3 e
R=‰((X-X≥)Œ+(Y-Y≥)Œ) ; R ; = @ * ( ( ; X

-@ v 0 ) A + ( ;

*Perform equation 3. Y - @ v 1 ) A ) e

Print R i 0 ; R e

Example

Obtain the center coordinates (X, Y) and radius R of the circle that passes through points P(1, 9), Q (7, 1) and S (0, 2).

4.Press j to return to the PROG mode menu.

5.Press 0, select the program ‘CIRCLE’ and press e.

6.Enter the coordinates (X1 to X3, Y1 to Y3) for the three points.

Result

The center is (4, 5) and radius is 5.

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