4 log ( 64 ) = 3
4 log ( 64 ) ≈ 4.3 (using the calculator)
1 3 log ( 60 ) ≈ 3.7 (using the calculator)
1 3 log ( 81 ) ≈ -4
1 3 log ( 1 81 ) = 4
0.1 log ( ) = -6
6 1 = 6 and 6 2 = 36 , so 1 < 6 log ( 30 ) < 2 .
3 3 = 27 and 3 4 = 81 , so 3 < 3 log ( 70 ) < 4 .
( 1 2 ) -3 = 8 and ( 1 2 ) -4 = 16 , so -4 < 1 2 log ( 10 ) < -3 .
( 1 3 ) 4 ≈ 0.012 and ( 1 3 ) 5 ≈ 0.004 , so 4 < 1 3 log ( 0.01 ) < 5 .
5.026
-8.399
-3.597
0.306
10 x = 0.01 , so x = 10 log ( 0.01 ) = -2 .
2 x = 60 , so x = 2 log ( 60 ) ≈ 5.9 .
0.8 t = 0.5 , so t = 0.8 log ( 0.5 ) ≈ 3.1 .
2 t = 3 gives you t = 2 log ( 3 ) ≈ 1.58 hours.