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Grade 12Physical Chemistry

Can anyone tell what happen where I draw circle with red colour in attachment

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Profile image of milind
12 Years agoGrade 12
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2 Answers

Profile image of Arun Kumar
12 Years ago
Hello
<$1$2>To avoid the need for separate tables to convert positive and negative logarithms back to their original numbers, a bar notation is used. The bar over the characteristic indicates that it is negative whilst the mantissa remains positive.

<$1$2> <$1$2>So here in your example

<$1$2>-(12-0.4941)=-11.5059

<$1$2> <$1$2>Thanks & Regards
Arun Kumar
Btech, IIT Delhi
Askiitians Faculty

Profile image of milind
12 Years ago
But how it round off from 11.5059 to 12.4941