raspunsul in word ,succes
[tex](4 e^{5x-4})' lnx+ 4e^{5x-4}*(lnx)'=
4 * e^{5x-4} *5x-4 + 4e^{5x-4} * \frac{1}{x} =
20x * e^{5x-4}-4+ 4e^{5x-4}* \frac{1}{x}=
e^{5x-4} (20x+4+1/x) [/tex]
[tex]((3x^{2} -4)^{100})'=
100(3x^2-4)^{99} (6x)
[/tex]
[tex]sin(7x-1)=
cos(7x-1) *7[/tex]