设x>-2.证明:
.
参考答案:命[*],x>-2,有f(-2)=0, [*] 所以f’(x)<0(当x>-2),又由f(-2)=0,所以f(x)<0当x>-2.证毕.
Thank you very much ____________ me the news.[ ]
A. told
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D. for telling
男,18岁,头部外伤2小时,CT示右颞叶前部团快样高密度影,鞍上池右侧变形、变窄,左移,诊断()
A.右颞叶血肿,小脑扁桃体疝
B.右颞叶单纯血肿
C.右颞叶血肿,伴脑水肿
D.右颞叶急性血肿,大脑镰下疝
E.右颞叶急性血肿,钩回疝