Найдите область определения функции:
[tex]y = \sqrt{x + 4} + log_{2}( {x}^{2} - 4 ) [/tex]
[tex]y = \sqrt{x + 4} + log_{2}( {x}^{2} - 4 ) [/tex]
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X+4>=0 x>=-4x^2-4>0 (x-2)*(x+2)>0
x>=-4
x<-2
x>2
ответ: x принадлежит [-4;-2) U (2; бесконечности)