limx趋向无穷【2x^2+3/3x+2】*sin1/x 答案是2/3呀,做错了
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![limx趋向无穷【2x^2+3/3x+2】*sin1/x 答案是2/3呀,做错了](/uploads/image/z/4521193-25-3.jpg?t=limx%E8%B6%8B%E5%90%91%E6%97%A0%E7%A9%B7%E3%80%902x%5E2%2B3%2F3x%2B2%E3%80%91%2Asin1%2Fx+%E7%AD%94%E6%A1%88%E6%98%AF2%2F3%E5%91%80%2C%E5%81%9A%E9%94%99%E4%BA%86)
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limx趋向无穷【2x^2+3/3x+2】*sin1/x 答案是2/3呀,做错了
limx趋向无穷【2x^2+3/3x+2】*sin1/x
答案是2/3呀,做错了
limx趋向无穷【2x^2+3/3x+2】*sin1/x 答案是2/3呀,做错了
limx趋向无穷 ,所以1/x趋近于0,故sin1/x=0,然后任何数乘以0都为零.综上,此题答案为0