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高数中的微积分,极限。为什么k=-2?
高数中的微积分,极限。为什么k=-2?
2025-03-14 09:51:22
推荐回答(1个)
回答(1):
tanx ~x和sinkx~kx带进去就得到
原来极限=lim -2x/(1+x) * 1/kx =1
就是k=-2了
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