| 10 INPUT "Range: ",L | |
| 20 PRINT "N ISQR ASQR SQR SQR-ASQR (SQR-ASQR)/SQR " | |
| 100 FOR X=1 TO L | |
| 110 GOSUB 1000 | |
| 115 GOSUB 1200 | |
| 120 PRINT #4,X,S,#12,A,SQR(X),SQR(X)-A,(SQR(X)-A)/A | |
| 140 NEXT X | |
| 999 END | |
| 1000 REM "Find the closest integer square root" | |
| 1010 FOR I=1 TO 1000 | |
| 1020 IF I*I>X THEN S=I-1 ELSE GOTO 1030 | |
| 1025 IF I*I-X<X-S*S THEN S=I | |
| 1026 RETURN | |
| 1030 NEXT | |
| 1050 RETURN | |
| 1200 REM "Approximate the root with first order taylor" | |
| 1220 A=S+(X-S*S)/S/2 | |
| 1230 RETURN | |