题目:If n is a prime number greater than 3, what is the remainder when n的平方is divided by 12?
问题:当管老师解题时,他出了3个方程式,分别是:
1) n=3A+1, n的平方=9A(square)+6A+1
2) n=3A+2, n的平方=9A(square)+12A+4
3) n=2A+1, n的平方=4A(square)+4A+1
我不明白的点是:这3个方程式是怎么推到或者是一看到题目就这么设出来的?
解答:
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阅读249928
解答:
sysadmin
提问:
请问郭老师 这是这次的寂静 请帮我分析一下下 如果问的是主旨 这主旨是啥?
解答:
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阅读265514
解答:
郭培月老师
提问:
请数学老师讲解思路 答案为1/30 谢谢老师
解答:
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阅读266755
解答:
ken@boost.org.cn老师
提问:
Although fruit can no longer grow once it is picked, it continues for some time to respire, taking in oxygen and giving off carbon dioxide, similar to the way human beings breathe.
A similar to the way human beings breathe.
B similarly to human beings who are breathing.
C just like the breathing of human beings.
D as human beings when breathing
E just as human beings do when they breathe 老师,我在网上看到如下的答疑,similar to /like 只能就近修饰前面的n,所以ABC错误,这句话我不太理解,是说similar to和like在这里是修饰respire的吗? 此外,还有个地方不理解,(like后面是不是应该+句子,similar to 后面+n )才能表示比较呢?