Co

MANIERE DE CALCULER LES LOGARITHMES

_f_ g A m ^ (1^616 m 4- 25740 m 9 A m 4-ig3o5om 8 A™’+ etc. )n 13

— ! 1 ' X (2750m' 3 4-49*4° A m + etc. ).-f-etc. . . . (A*Q)

. 4 • m c A ni r , , . \

A sni. - z= - ( 120 m 4 - 240 Am)

2re ,, 5

— d A m _ ^ ^ S40 m*-} - 6040 m 3 A m 4- 10920 m A m’+ 8400 A m 1 )

Tl 7

-+- — ” - X ( 3024 m 5 -f- 30240 ni A m H- i3io4o m 3 A m’ 4 - etc. )

n 7

r \ m 4

— -- X ( 7920 m 7 -4- 110880 m 6 A» + etc. )

n 11

4

~t~ f m . X ( 17160 m 9 + 5o888o m s Aui + etc. )

h Ai

X ( 32760 m 11 4 - etc. ) 4 - etc.( A 4 Q)

_, ç _ <

a 5 • m % _ 120cAm d&m

A sin, -- — - - —-X

2re n ■ n 7

( 2520 m’ 4- 12600 m A m 4- 16800 A m’ )

4- îA!ü x ( l5l2om 4 4-i'5i2oom 3 Am4-604800m’Am 7 4- etc.)

/A m 5

X ( 5544 o m 8 4- 83i6oo ni A m 4- 5544ooo m 4 A m* 4- etc. )

5

4- ?—— X ( 15444° f 1 * 4- 3o888oo m 7 A m 4- etc. )

— ^ ^”1 . X ( 36o56o m 10 + etc., ) 4 - etc.

(A 5 Q)

A 8 sin. V 1 Ü. — — d^Am_ x / 5 0 / 0 m _j_ j5 120 Am)2 n .J ' 7

e Am

X (60480m 3 4-54432om’Am4-i72368omAm’4-i9°5i2oAm 3 )

r 6

— Li Zîl X ( 332640 m 5 4 - 4989600 m* A m 4 - 31600800 m 3 A m 3 +etc.)4 - f. -fL X ( 1235520 m 7 + 25g45g2o m 8 A m 4 - etc. )

— ÏL LfL X ( 56o36o m 9 4 - etc. ) 4 - etc. ..( A 9 Q )

Ainsi des autres.

La formule R étant mise sous cette forme,

Tang.fL^JlüfLx A + ™a' + ™. £'+ 31 c ' 4 - etc.