10 CLS
20 A=0.5
30 L=8
40 S=2
50 X0=40
60 Y0=15
70 DEF FN X(W)=S*A*W*SIN(W)+X0
80 DEF FN Y(W)=A*W*COS(W)+Y0
100 FOR W=0 TO 3.14*L STEP 0.1
110 LOCATE FN X(W),FN Y(W)
120 PUT "x"
130 NEXT
300 PRINT