Full text: Appeltauer, Ignatius: Elementorum matheseos purae pars prima continens algebram

— 214 
videndi, minus logarithmo divisoris ; vel etiam 
logarithmus fractionis prodit, si a logarithmo 
numeratoris logarithmus denominatoris aufera 
tur. 
E. g. 
20 
— log. 20 — log. 3b — log. 2 4 log. a — 
log. 
3b 
log. 3 — log. b. 
zab 
log. gab — log. (a—b) = log. 3 
log. 
+ log. a + log. b— log. (a—b). 
363. §. Sit iterum N = av, proinde n 
log. N. Quia vero Nm= (an )m amn (§. 211 
et 263.) erit quoque log. Nmemn, et si valor 
ipsius n substituatur log. Nm = m log. N. Igi 
tur logarithmus potentiae aequatur logarithmo 
radicis ducto in exponentem potentiae. E. g. 
log. 4= 2 log. 2 quia 4 — 22; vel log. 27 
3. log. 3 quia 27 — 33, log. 2187 = 7 1og 3; ob 
2187 — 37. 
log. 4a 2 b 3 cm —log. 44log. a2 +log. bs Hlog. en 
= 2 log. 2 + 2 log. a - 3 log. b 4 mlog. c. 
5ar (a2 —x2 )2 
= log. 50" (a2 — x2 )2 
log. 
3b3 (c—x)4 
— log. 363 (c— x)4 = log. 5 + n log. a 
+ 2 log. (a 4x) + 2 log. (a—x) — log. 3 
— 3 log. b — 4 log. (c—x). 
364. §. Ponatur R =VN; proinde N=Rm. 
Juxta §. 363. erit log. N= mlog. R, et si haec 
log. N 
= log. R seu 
aequatio per m dividatur ; 
m
	        
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