Sharp EL-5230 - Manual (Page 98)

96
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 -
; 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 -
; 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 + ( ;
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 (X 1 to X 3 , Y 1 to Y 3 ) for the three points.
Result
The center is (4, 5) and radius is 5.
Chapter 8: Application Examples
* Perform equation 1.
* Perform equation 2.
* Perform equation 3.