136 



Dieser Kurve sind dann für die zwischenliegenden Werte von r die Funktions- 

 werte entnommen und in die zweite Zeile gestellt. 



43) A(r) 



r 1.9 2.i 2.3 2.5 2.7 2.9 3.i 3.3 



— 0.0910 —0.1264 —0.1059 —0.0420 +0.0445 +0.1299 +0.1828 +0.1922 

 — 0.1137 —0.1224 —0.0777 —0.0006 +0.0903 +0.160S +0.1941 



3.5 3.7 3.9 4.i 



+ 0.1688 +0.1359 +0.1120 +0.0952 



+ 0.1827 +0.1518 +0.1236 +0.1029. 



Daraus durch graphische Differentiation: 



44) dA(r) 



dr 



r 1.9 2.i 2.3 2.5 2.7 



— 0.1983 —0.0354 +0.2190 +0.3963 +0.4476 

 — 0.1806 +0.1029 +0.3147 +0.4494 + 



2.9 3.1 3.3 



+ 0.3315 +0.1791 —0.0561 

 0.4065 +0.2634 +0.0393 



3.5 3.7 3.9 4.i 



— 0.1458 —0.1317 —0.0960 —0.0723 



— 0.1122 —0.1554 —0.1122 — 0.0S43. 



Damit wird endlich: 

 45) (I) 



a 1.9 2.i 2.3 2.5 2.7 2.9 3.i 3.3 



— 0.337 —0.558 —0.560 —0.263 +0.324 +1.091 +1.757 +2.093 

 — 0.445 —0.592 —0.448 —0.004 +0.708 +1.447 +1.988 



3.5 3.7 3.9 4.i 



+ 2.068 +1.860 +1.705 +1.601 



+ 2.112 +1.967 +1.7S5 +1.646 



(n) 



a 1.9 2.i 2.3 2.5 2.7 2.9 3.i 3.3 



+ 1.017 +0.650 —0.773 —2.833 —4.750 —5.132 — 4.425 —1.085 

 + 1.178 +0.045 — 1.72S —3.945 —5.104 —5.000 —2.633 



3.5 3.7 3.9 4.i 



+ 1.058 +1.474 +1.150 +0.893 



+ 0.094 +1.650 +1.290 +1.011 



36 



