210 Opuscula, 
/ /• ^y^ -^ziil' fumpto logarithmo lijperb&llco » 
Antequam formulas contincnte.^ quantitates circulares ex- 
pedio , in mentem revoco" theoremata quatuor , qux demon- 
llrata fuppono in trigonometricis : nempe 
S c . <p .T c . -^- 
f—Cc.ca- i, r-^Sc.co-Jl^ 
T 6 . — 
erffo 
«* C c . p ^ r — - iS" c . ^ j,^' 
2" c . — 
■ Demonftravi S — - ■ ' ^ - , exiftente tangente HI 
L c . p r 
r ^ \/r-{-Sc.<i, i «-{-^ 
Hi logarithmi in analogovum fyftemate accipiendi funt . Ut 
ad hyperboiicos tranfeamus , fatis ell numeros multipiicare 
per ^2 , & habebimus 
r a 
/r-i- S c .ip <a -{- 
Similiter S "^^--^ '^^^ , exiftente ni = Cc.<p: ergo 
- = / "= . . . — ^ =: / -2 : igitur 
v/^ v/r-Cp v/^-T' 
S fL^- .y^^IiL JL .r.. -^. Hi funt loga- 
rithmi aiialogi , quorum numeros fi multiplices per \l i , obti- 
nebis integrationem per logarithmos hyperboiicos , nimirum 
S -—-Ir . "^L^^^ili^ =zITc.-^. Hxc ofrendunt , quantum 
lYieje formiilse cum Eulerianis conveniant . Vale . 
Coll S. Luciix pofiridis Idus Sept^mhris il^i, \ 
VIN- 
