问题标题:
lim(x趋向于无穷)(2x^2+3/3x+2)(sin1/x)=
问题描述:

lim(x趋向于无穷)(2x^2+3/3x+2)(sin1/x)=

盛斌奎回答:
  lim(x趋向于无穷)(2x^2+3/3x+2)(sin1/x)   -lim(x趋向于无穷)(2x^2+3/3x+2)
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