Approximation error: Difference between revisions

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TheIn [[mathematics]], the '''error''' of the numerical value of ''b'' as an approximation of ''a'' is:

:<math> a - b \,\! .</math>

The '''absolute error''' of ''b'' as an approximation of ''a'' is:

:<math> |a - b| \,\! .</math>

The '''relative error''' of ''b'' as an approximation of ''a'' is:

:<math> \frac{|a - b|}{|a|}. </math>