(㎡+3m+2)/(㎡-1),m→1,求极限,给出解题步骤,谢谢!
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(㎡+3m+2)/(㎡-1)
=[(m+1) (m+2)] / [(m+1) (m-1)]
= (m+2) /(m-1)
= 3/0 ---------------------------------------- (m趋于1)
=无穷
怀疑原题是m趋于-1才对
(㎡+3m+2)/(㎡-1)
=[(m+1) (m+2)] / [(m+1) (m-1)]
= (m+2) /(m-1)
= 1/(-2 ) ---------------------------------------- (m趋于-1)
= - 0.5
=[(m+1) (m+2)] / [(m+1) (m-1)]
= (m+2) /(m-1)
= 3/0 ---------------------------------------- (m趋于1)
=无穷
怀疑原题是m趋于-1才对
(㎡+3m+2)/(㎡-1)
=[(m+1) (m+2)] / [(m+1) (m-1)]
= (m+2) /(m-1)
= 1/(-2 ) ---------------------------------------- (m趋于-1)
= - 0.5
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