Question

ex. suna cam asa: Sa se rezolve in multimea nr.reale ecuatia arctgx/3+arctg1/sqrt(3)=pi/3

 

Answer 1

arctg (1/sqrt 3)= pi/6
arctg x/3+pi/3=pi/3
arctg x/3=pi/3-pi/6
arctg x/3=pi/6
x/3=1/sqrt(3)
x/3 = sqrt(3)/3
x=sqrt (3)