答案得1的极限公式有那几个比较常见？
\u6c42\u6781\u9650\u76844\u4e2a\u91cd\u8981\u516c\u5f0f\u8fd9\u4e2a\u5e94\u8be5\u4e0d\u96be\u5427\u3002
\u662f\u4e0d\u662f\u8fd9\u4e2a\u3002
lim(f(x)+g(x))=limf(x)+limg(x)
lim(f(x)-g(x))=limf(x)-limg(x)
lim(f(x)*g(x))=limf(x)*limg(x)
lim(f(x)/g(x))=limf(x)/limg(x) limg(x)\u4e0d\u7b49\u4e8e0
lim(f(x))^n=(limf(x))^n
\u9996\u5148\u770b\uff0c\u4e00\u5b9a\u8fc7\uff08t\uff0cb\uff09\u4e24\u70b9
\u5176\u6b21\uff0c\u5f53a>0\u65f6\uff0ca\uff08x-t\uff092+b>b\uff0c\uff08\u56e0\u4e3a\u5b8c\u5168\u5e73\u65b9\u662f\u6052\u5927\u4e8e\u96f6\u7684\uff09\uff0c\u6240\u4ee5\uff0c\uff08t,b\uff09\u662f\u56fe\u50cf\u7684\u6700\u4f4e\u70b9\uff0c\u4e5f\u5c31\u662f\u9876\u70b9
\u6700\u540e\uff0c\u5f53a<0\u65f6\uff0ca(x-t)2<0,\u6240\u4ee5a(x-t)2+b<b\u3002\u4e5f\u5c31\u662f\u8fd9\u4e00\u70b9\u7684\u7eb5\u5750\u6807\u5c0f\u4e8eb\uff0c\u4e5f\u5c31\u662f\u8bf4(t,b)\u662f\u6700\u9ad8\u70b9\uff0c\u4e5f\u5c31\u662f\u9876\u70b9\u4e86
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