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# Logarithm and Anti-Logarithm Operations

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Sections
Significant Figures
Multiplication and Division Operations
Logarithm and Anti-Logarithm Operations
Precision and Accuracy
Types of Errors
Uncertainty
Propagation of Uncertainty: Triangular Distribution

Logarithmic and natural logarithmic functions of values.

###### Logarithm and Anti-Logarithms

Example #1: When taking the log of a number the number of digits in the mantissa of your answer is equal to the number of significant figures in the problem. Example #2: Provide the answer with the correct number of significant figures for each of the following:

a) log(1.15 x 10-5)                                    b) log(100.)

When taking the antilog of a number the number of significant figures in the answer is equal to the number of digits in the mantissa of the problem.

Example #3: Provide the answer with the correct number of significant figures for each of the following:

a) antilog(-4.18)                     b) 100.0033