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(arctg(e^x))' =? ('-inseamna derivat)

Răspuns :

(arctg [tex] e^{x} [/tex] )' = [tex] \frac{ (e^{x} )'}{1 + (e^{x} )^{2} } [/tex] =  [tex] \frac{ e^{x} }{ 1+ e^{2x} } [/tex]