Full text: Guida al calcolo delle coordinate geodetiche

— 24 — 
d 
ds‘ 
== tg qp sen 2 ,g | (1+3 tg 2 qp) sen’.s —4(2+3 tg 2 qp) cos 2 ,2 + 
e 2 A 0 T 
+ r -jt- (8 sen cp cos qp + 18 tg qp) sen 2 z cos 2 z 4- 
1 £ \x S ) I 
+ 12 sen cp cos qp cos 4 z + tg qp (1 --10 sen ’qp) sen 4 z 
d*e 
ds 4 
A 4 
a 4 
t g qp 
sen 2z 
+ 4 
cos qp 
4 A 4 
1 — e 
a 
(8 + 12 tg 2 cp) cos’ir — (4 + 12 tg 2 qp)senV 
sen qp sen 2z cos 2z. 
+ 
-^+ = ~ sen z cos z f(5 + 28 tg 2 cp + 24 tg 4 qp) cos *z — 
ds* a L 
— (1+20 tg 2 qp + 24 tg 4 qp) sen 2 z J + 
+ ^ —- a . ^sen2 cos z j^(6 + 2 sen 2 qp) cos 2 z—(2+6sen 2 qp) sen 2 ? 
Per i coefficienti differenziali di 5° ordine porremo e = o ; in tal 
caso sarà A= 1, N = p — a e quindi si ottiene: 
+qp _ 1 gen CQs z r (1 30 ^ 2 qp -j_ 45 tg 4 qp) sen 2 ? — 
dir or L 
— (8 + 60 tg 2 qp 4- 60 tg 4 qp) cos 2 ? 
(2 + 15 tg 2 qp + 15 tg 4 qp) cos 4 z — 
d 5 0 8 sen ^ 
ds b a 5 ' cos cp 
— (1 + 20 tg 2 cp + 30 tg 4 qp) sen 2 ? cos *z + (1 + 3 tg 2 qp) tg 2 qp sen 4 ? 
tg qp sen z Q(61 + 180 tg 2 qp + 120 tg 4 qp) cos 4 z — 
— (58 + 280 tg 2 qp 4- 240 tg 4 qp) sen *z cos 2 z + 
+ (1 + 20 tg 2 qp + 24 tg 4 qp) sen *z . 
Sostituendo tutti i coefficienti differenziali ora trovati nella (15) 
si otterranno le formole seguenti:
	        
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