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    WHO KNOWS THE PROOF OF THE "derivative of the natural logarithmic function rule"?, which states dy/dx(lnx)=1/x???
    Or maybe someone knows the link where I can look for the proof??
    Thank's...................
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    Does this help: http://www.math2.org/math/derivatives/more/ln.htm?
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    MathS
 
 
 
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