CÂU 91. CHO HÀM SỐ 2 1+ (C). 1X

1 , - 100 CAU HOI KHAO SAT HAM SO CO HUONG DAN VA LOI GIAI CHI TIET
100 CAU HOI KHAO SAT HAM SO CO HUONG DAN VA LOI GIAI CHI TIET

1 , 2 1

MA x MB y

0 0 x

= + = - = 1

+

0