A:塔里木盆地
B:准噶尔盆地
C:柴达木盆地
D:四川盆地
— I think that if you ________ your study schedule for a week, you will pass it.
(Ⅰ)求函数f(x)的定义域;
(Ⅱ)判断函数f(x)的奇偶性,并加以证明;
(Ⅲ)设a= 12 ,解不等式f(x)>0.