A^(-5X)>A^(X+7)
（a＞0且a≠1),
当01,-5X>X+7 ==>X
如果a的-5x次方＞a的x+7次方（a＞0且a≠1),求x的取值范围.
如果a的-5x次方＞a的x+7次方（a＞0且a≠1),求x的取值范围.
其他人气：511 ℃时间：2020-03-29 20:14:45
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