\(y = \sqrt {x - 1} + \sqrt {9 - {x^2}} \)
A.\(D = \left( {1;3} \right).\)
B.\(D = \left[ { - 3;1} \right]\)
C.\(D = \left[ {1;\,\,3} \right].\)
D.\(D = \left( { - \infty ;3} \right] \cup \left[ {1;3} \right]\)
A.\(D = \left( {1;3} \right).\)
B.\(D = \left[ { - 3;1} \right]\)
C.\(D = \left[ {1;\,\,3} \right].\)
D.\(D = \left( { - \infty ;3} \right] \cup \left[ {1;3} \right]\)
Loga
Hóa Học lớp 12
