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Hi, yes, N is used, but it is used in **both** expressions and so it should give the same result, since the only difference ist the FullSimplify. In any case: I think mathematica should *know*, that Log[10^3]/Log[10] is 3 without a FullSimplify....
Hello, entering the following commands N[Log[10^3]/Log[10], 20] N[Log[10^3]/Log[10] + 1., 20] Floor[%] in mathematica 8 I get the following output: 3.0000 4. 3 I think, of course, the last output should be 4 and not 3. Otherwise...