22
ON THE VALUE OF ANNUITIES.
for different rates of interest, by multiplying this by the number of years,
we find the logarithm of £l in that term.
The following table gives the amounts and their logarithms of £l in
one year, payable yearly, half-yearly, quarterly, and momently, for dif
ferent rates of interest, and is thus formed:
When interest is 3^ per cent, the amount payable yearly is 1.035,
the logarithm of which is .0149403497, (Hutton’s Logs., Table 3);
when interest is payable half-yearly we have
. . 31 Y / 7 V f407 N
1 +
= 1 +
100 X 2,
= 1.035306
= 1 +
400
400
log
'407 N
.400,
= 2{log 407 - log 400}
= 2(2.6095944092 — 2.6020599913} *0150688358;
when interest is payable quarterly
1 + ~ 1 = ( i + -^7T ) = fh+ 1
807 n
100 X 4 )
= 1.035462;
800
807
800
log (§55 I = 4 i lo s 80,7 " log 800 ^
= 4(2.9068735347 - 2.9030899870} = .0151341908.
When interest is payable momently, we have *035 X *4342944819
“ *01520030687 for the logarithm, the number corresponding to
which is 1.035620
Nominal
rate of
Interest.
Payable.
Amount
of ¿£1 in
one year.
Logarithms of
such amount.
Nominal
rate of
Interest.
L 1
Amount
Of it'1 in
one year.
Logarithms of
such amount.
y
1.020000
.0086001718
y
1.050000
.0211892991
2
h
1.020100
,0086427476
5
h
1.050625
.0214477308
per cent.
q
1.020150
.0086642470
per cent.
q
1.050946
.0215801275
m
1.020201
.0086858896
m m
1.051271
.0217147241
y
1.025000
.0107238654
y
1.060000
.0253058653
n
h
1.025156
.0107900638
6
h
1.060900
.0256744494
per cent.
q
1.025235
.0108235735
per cent.
q
1.061364
.0258641690
m
1.025315
,0108573620
m
1.061837
.0260576689
y
1.030000
.0128372247
y
1.070000
.0293837777
3
h
1.030225
.0129320845
7
h
1.071225
.0298806996
per cent.
q
1.030339
.0129802193
per cent.
9
1.071859
.0301376716
m
1.030454
.0130288345
m
1.072508
.0304006137
y
1.035000
.0149403498
y
1.080000
.0334237555
3*
k
1.035306
.0150688358
8
à
1.081600
,0340666786
per cent.
q
1.035462
.0151341909
per cent.
q
1.082432
.0344006870
m
1.035620
.0152003069
m
1.083287
.0347435586
y
1.040000
.0170333393
y
1.090000
.0374264979
4
h
1.040400
.0172003435
9
y
1.092025
.0382325809
per cent.
q
1.040604
.0172854951
per cent.
q
1.093083
.0386532667
m
1.040811
.0173717793
m
1.094175
.0390865034
y
1.045000
.0191162904
y
1.100000
.0413926852
4*
h
1.045506
.0193266334
10
h
1.102500
.0423785981
per cent.
q
1.045765
.0194341385
per cent.
q
1.103813
.0428954616
in
1.046028
.0195432517
m
1.105171
.0434294482
ON
3i
give
intei
The
ing 1
amo
prop
is to
year
(1 d
(1 4
(1 4
G
whic
B;
R\
the s
Ei
10 y<
By!
* I