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 cat face  fractia asta derivata :
[tex] \frac{2xlnx+x}{xlnx} [/tex] 


Răspuns :

f'(x)= xlnx( 2lnx +2+1)- lnx(2xlnx+x)/x^2ln^2x
f'(x)= 2x*ln^2x+3xlnx - 2xln^2x-xlnx/ x^2ln^2x
f'(x)= 2xlnx/x^2ln^2x.