The first time I read the Eight Diagrams Array in a book, it was not in the Romance of the Three Kingdoms, but in the Water Margin. My mother told me that this is Zhuge Liang's Eight Diagrams Array, which looks amazing.

When I grew up, I was once fascinated by martial arts novels, which also mentioned the super powerful Eight Diagrams, which was even more powerful than Gongsun Sheng's. But after all, there is only a very powerful description, and there is no real scene that can be seen (is this why people don't realize it).

But no matter how bad I write, I am not convinced. Nothing is so mysterious as eight stones (or eight piles)-unless I try it myself, how can a materialist like me believe it easily! If it's a maze, it's ok, but even if it's a maze, if you master certain logical laws, you won't be afraid to come out.

The key is to keep a clear head and clear thinking.

The same is true for solving problems. Look at the topic!

New knowledge cup math competition in grade three;

It really looks just some ordinary stones, doesn't it? Factorization is not difficult. However, since it is a weighty competition, we must not underestimate its math problems. Otherwise, a few simple stones put out the array door, and you didn't even think about it, so you picked the nearest door and wanted to go through it. Basically it can be concluded that it is a dead door.

Step into the array, don't panic:

1, stop, look around first (exam), is there any special sign (premise).

There are no preconditions for this question!

Since there is no, it means that "everything is possible", so what can "everything" contain?

(1) First, observe what kind of stone array this is.

Scores! What must be immediately reflected in my mind is: denominator ≠0, which must be there.

(2) Secondly, take a closer look at what is unusual or ambiguous about this stone array.

Sure enough! An unpleasant absolute value. You must light three signal lights at the same time. > 0，=0，& lt0

(3) Further explore what is the composition of this fuzzy part.

Yes, there are two elements, A and B. Calm down, don't be afraid, and come one by one: when a>0, b<0 Babalala. ......

(4) Is there any omission? It's gone. Start ~ ~ solving the problem!

Honey, did you faint in the stone array? As long as your head is fresh and orderly, you will definitely find a new way to beat Courtin!