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ln e = 1
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where <math>\ln{a}</math> is the [[natural logarithm]] for ''a''.
 
where <math>\ln{a}</math> is the [[natural logarithm]] for ''a''.
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The [[transcendental number]] ''[[e]]'' (2.7182818...) has the property that the [[derivative]] of the function ''e''<sup>''x''</sup> is ''e''<sup>''x''</sup>.  This function is thus important in the solution of many types of differential equations. ''e'' is the canonical exponential function.
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The [[transcendental number]] ''[[e]]'' (2.7182818...) has the property that the [[derivative]] of the function ''e''<sup>''x''</sup> is ''e''<sup>''x''</sup>, since ln ''e'' = 1.  This function is thus important in the solution of many types of differential equations. ''e'' is the canonical exponential function.
    
[[Category:Mathematics]]
 
[[Category:Mathematics]]
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