PLATE XV 



Curves -wkose eq^uatioiLS are y = asia x sin tilx. 



22. TTV = %. 23. w = %. 24. ot: = Vs. 



25.//t=4/5. 



26. z^- %. 21.171' 7^. 



28. 77t= 8/9. 



30. m = ^0. 



31. m- y.o 



33. OT.= :Hi. 34. m = Vii. 35. /«. = s/u. 



37. m =V-Vb. 



29 m^ >. 



32. m= ^Ao. 



36. OT = 3^ii. 



Pi:jiiler,/)rL<i Cnsan'i'NewHaven.,Ct . 



