limx趋于无穷大（x*sin1/x)怎么做?过程 limx趋于无穷，sin1/x等于多少
limx\u8d8b\u8fd1\u4e8e\u65e0\u7a77\u5927\uff0cx\u4e58sin1/x\u5982\u679c\u5c06\u65e0\u7a77\u5927\u7684\u5012\u6570\uff08\u65e0\u7a77\u5c0f\uff09\u8bb0\u4e3af(x),\u539f\u6765\u7684\u65e0\u7a77\u5c0f\u8bb0\u4e3ag(x),\u5219\uff1a
1\u3001\u5982\u679cf(x)\u662fg(x)\u7684\u9ad8\u9636\u65e0\u7a77\u5c0f\uff0c\u65e0\u7a77\u5927*\u65e0\u7a77\u5c0f=0
2\u3001\u5982\u679cf(x)\u662fg(x)\u7684\u4f4e\u9636\u65e0\u7a77\u5c0f\uff0c\u65e0\u7a77\u5927*\u65e0\u7a77\u5c0f=\u221e
3\u3001\u5982\u679cf(x)\u4e0eg(x)\u662f\u540c\u9636\u65e0\u7a77\u5c0f\uff0c\u65e0\u7a77\u5927*\u65e0\u7a77\u5c0f=C(C\u4e3a\u4e0d\u7b49\u4e8e0\u7684\u5e38\u6570)
4\u3001\u5982\u679cf(x)\u4e0eg(x)\u662f\u7b49\u4ef7\u65e0\u7a77\u5c0f\uff0c\u65e0\u7a77\u5927*\u65e0\u7a77\u5c0f=1
\u6ce8\uff1a\u4ee5\u4e0a\u5747\u6307\u5728\u540c\u4e00\u6781\u9650\u72b6\u6001\u4e0b\u3002
\u5982\u9898\u540c\u7406
\u53ef\u4ee5\u5206\u5f00\u8ba8\u8bba
x\u8d8b\u4e8e\u65e0\u7a77
1/x\u8d8b\u4e8e0
sin0=0
\u6240\u4ee5sin\uff081/x\uff09\u8d8b\u4e8e0
\u6ee1\u610f\u91c7\u7eb3\u5965
\u8fd8\u6709\u7591\u95ee\u8bf7\u8ffd\u95ee
不能做答
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