lim1/根号n*sin (n趋近于无穷),limx^3+1/4-x^2(x趋近于2),limx^2+1/x-1/x^2(x...lim1/根号n*sin (n趋近于无穷),limx^3+1/4-x^2(x趋近于2),limx^2+1/x-1/x^2(x趋近于-2)

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lim1/根号n*sin (n趋近于无穷),limx^3+1/4-x^2(x趋近于2),limx^2+1/x-1/x^2(x...lim1/根号n*sin (n趋近于无穷),limx^3+1/4-x^2(x趋近于2),limx^2+1/x-1/x^2(x趋近于-2)
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lim1/根号n*sin (n趋近于无穷),limx^3+1/4-x^2(x趋近于2),limx^2+1/x-1/x^2(x...lim1/根号n*sin (n趋近于无穷),limx^3+1/4-x^2(x趋近于2),limx^2+1/x-1/x^2(x趋近于-2)
lim1/根号n*sin (n趋近于无穷),limx^3+1/4-x^2(x趋近于2),limx^2+1/x-1/x^2(x...
lim1/根号n*sin (n趋近于无穷),limx^3+1/4-x^2(x趋近于2),limx^2+1/x-1/x^2(x趋近于-2)

lim1/根号n*sin (n趋近于无穷),limx^3+1/4-x^2(x趋近于2),limx^2+1/x-1/x^2(x...lim1/根号n*sin (n趋近于无穷),limx^3+1/4-x^2(x趋近于2),limx^2+1/x-1/x^2(x趋近于-2)
1.根号n无穷,sin n!有界 所以第一题为0
2.连续函数的极限就是函数值,所以第二题为21/4
3.同第二题,直接代入x=-2就行了,答案为13/4

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