lim(x,y)→(0,0)[1-cos(x²+y²)]/(x²+y²)e的x²y²
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lim(x,y)→(0,0)[1-cos(x²+y²)]/(x²+y²)e的x²y²lim(x,y)→(0,0)[1-cos(x²
lim(x,y)→(0,0)[1-cos(x²+y²)]/(x²+y²)e的x²y²
lim(x,y)→(0,0)[1-cos(x²+y²)]/(x²+y²)e的x²y²
lim(x,y)→(0,0)[1-cos(x²+y²)]/(x²+y²)e的x²y²
如果意思是单纯的求极限的话就拆开来,然后洛必达法则求极限
题目好像有误?
lim(x,y)→(0,0)[1-cos(x²+y²)]/(x²+y²)e的x²y²
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