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Express as a single logarithm.
Express in terms of logarithms of a single variable or a number.
loga3– 3 logax –logay – 5 logaz
loga3+ 3 logax +logay + 5 logaz
log19 6+1
2log19 m–log19 n
log19 n–log19 6–1
2log19 m
log19 6·1
2log19 m÷log19 n
1
5log89– 2 log8y– 2 log8x
3log5 x + 8 log5 y +log57
3log5 x + 8 log5 y –log57
(3 log5 x)(8log5 y) –log57
3log5 x – 8 log5 y –log57
log11 y–log11 9–1
2log11 x
log11 9·1
2log11 x÷ log 11 y
log11 9+1
2log11 x–log11 y
1
9log17 3– 2 log17 y– 2 log17 x
1
9log17 3– 2 log17 y–log17 x
9 log17 3– 2 log17 y–log17 5
1
2log13 m+1
2log13 n–1
2log13 20
1
2log13 m+1
2log13 n–log1320
1
2log13 m·1
2log13 n÷1
2log13 20
1
4logn9–9
4logn x –2logn z
1
4logn9+9
4logn x +2logn z
1
4logn9+9
4logn x –2logn z
1
4logn9+ 9 logn x – 8 logn z
1
3log8p+1
5log8q– 2 log8t
1
3log8p·1
3log8q÷ 2 log8t
3 log8p+ 3 log8q– 2 log8t
7
10 log8p+3
10 log8q–1
5log8t
Express as a single logarithm.
(log am– log an) + 3 log ak
2log 6(4x – 8) + 3 log 6(6x + 1)
log 6((4x – 8)2+(6x + 1)3)
log 6
(4x – 8)2
(6x + 1)3
1
2log 2x4+1
4log 2x4–1
6log 2x
6log ax–5
3log ay+1
2log aw– 2 log az
log a (6 x –5
3y+1
2w– 2 z )
5log 2(4x – 7) + 3 log 2(5x + 1)
log 2
(4x – 7)5
(5x + 1)3
log 2((4x – 7)5+(5x + 1)3)
Given log 10 2 = 0.3010 and log 10 3 = 0.4771, evaluate log 10 6.
Given log 10 2 = 0.3010 and log 10 3 = 0.4771, evaluate log 10 12 .
Given log 10 2 = 0.3010 and log 10 3 = 0.4771, evaluate log 10 24 .
Let logb A =3.441 and logb B =0.315. Find logb AB.
Let logb A =3.159 and logb B =0.391. Find logbA
B.
Given logb4=1.053 and logb16 =1.594, evaluate logb4.
cannot be found using the properties of logarithms
Given logb4=1.237 and logb9=1.372, evaluate logb5.
cannot be found using the properties of logarithms
Using a calculator, find to the nearest ten–thousandth.
Use a calculator and the change–of–base formula to find the logarithm to four decimal places.