lim(ex2-1)/(cosx-1)=____.
lim(ex2-1)/(cosx-1)=____.
【正确答案】:-2。 解析: limx→0(ex-1)/(cosx-1)=-limx→0(ex2-1)/(1-cosx) =-limx→0x2/[(1/2)x2]=-2.
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