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Laws of Logarithms Worksheet
If and , determine the value of:
1. 2.
3. 4.
5. If and , determine an expression for the following in terms of and : 6. 7.
8. 9. 10. 11. 12. If and , determine an expression for the following in terms of and : 13. 14. 15. 16. 17.
18. If and , determine an expression for
.
19. If , determine an expression for .
If , determine an expression for the following in terms of :
20. 21.
22. 23.
24. 25. Write as a single logarithm: 26. 27.
28. 29.
30.
3log =a 7log =b
2logab ba
log
ba 2
logab10
log
ba
100log
a=3log b=5log
a b15log 75log
45log 325
log
30log 6log
500log
x=5log2 y=3log2x y
20log2 24log25.7log2 5.4log28.0log2
x=5log3 y=36log26log5log 29 −
a=25log4 5log25log 162 +
k=8log3 k2log3 8log9
64log3 24log93log8 27log24
cba logloglog −− alog2 −
3log2 +b 2log2log 55 +− bc
pk 33 log3log2 −−