摘要： In a particular country it has been found that the probability of snow is dependent on whether or not it snowed the day before. If it snows one day then the probability of snow the next day is 0.72. If it doesn’t snow one day then the probability of snow on the next day is only 0.08. a. A transition matrix T that can be used to represent this information,find the T b.If it snows on Monday, find the probability that it will snow on Friday can be found . c.For this Markov chain, the long term probability of snow, is equal to:
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Given BC=1,
in a triangle（三角形）ABC, then the range of length of the side AB (or AC) is_____________________。
（2013•重庆）对正整数n，记In={1，2，3…，n}，Pn={
|m∈In，k∈In}．
（1）求集合P7中元素的个数；
（2）若Pn的子集A中任意两个元素之和不是整数的平方，则称A为“稀疏集”．求n的最大值，使Pn能分成两个不相交的稀疏集的并．
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（1）求集合P7中元素的个数；
（2）若Pn的子集A中任意两个元素之和不是整数的平方，则称A为“稀疏集”．求n的最大值，使Pn能分成两个不相交的稀疏集的并．
把区间[a，b]（a＜b）n等分后，第i个小区间是（ ）
A、[
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B、[
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C、[a+
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D、[a+
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