利用有界量乘无穷小依然是无穷小求极限,题目是lim(x趋近0)x^2sin1/x还有lim(x趋近于无穷)arctanx/x
利用“有界量乘无穷小依然是无穷小”求极限,
题目是lim(x趋近0)x^2sin1/x还有lim(x趋近于无穷)arctanx/x