Questions about math exams! Those with experience enter!

Well, how do I think that's talking about me, I'm just a junior in high school this year, from elementary school to high school, math is my eternal pain, especially when the exam is very tight, plus it's wrong, I'm speechless, it's 3 9 or something like that, and I feel like it's natural carelessness, but it's actually very serious but I can't help it, and now it's much better in high school. As the review begins, those formulas become familiar and everything will be fine, come on!

If you come across a good suggestion, can you send it to me as well? Thank you in advance.

Practice makes perfect, and it is natural to see more question types.

It's not an exaggeration, when I was in my third year of high school, I basically did the questions of the previous high school exams, the questions of Huanggang Haidian, and the teacher didn't know the test papers found from **, and I was going to vomit, and I only slept six hours a day.

To do math problems, we must establish an inevitable connection between what is known and the solution of the problem, which will make the thinking towards the goal, otherwise, it will be simple and complicated. It is also important to memorize all the math related to the problem to be solved. If you only know one thing and don't know the other, then you will only use one of the answers to solve it, and if you use the second to solve it, you will take a detour, and sometimes you can't even get out.

(1) The circumference of the Earth's equator is 40,070.69 kilometers, and the number on the horizontal line is written as (kilometers, and the number rewritten as "10,000 kilometers" is (4) million kilometers, and the two decimal places are (10,000 kilometers.

2) A two-digit decimal place, the number in the hundredth and percentile places is 7, and everyone else is 0, this decimal is written as (, which is composed of (1, which can also be seen as composed of (( and (70007) (.

Hey, you're a primary school student, this topic is quite shocking, and the upstairs have said it

(1) Kilometers, 10,000 kilometers, 10,000 kilometers.

2),, 700 1 and 7 hundredths.

You're an elementary school student, right?

Don't be careless and think that the question is complete.

1. The choice of options is very confusing, first finish the question, and then check, according to different answers, divergent thinking, hypothetical possibility, hypothetical is option A, right that is why? Eventually, the possibility is ruled out. Usually do practice questions, you can also do this, the knowledge points of each question are ever-changing, the test is how to use it, and drawing is also a good way to avoid mistakes.

2. Fill in the blanks, I personally think that there is no repeated calculation, as long as you make sure that your algorithm is right, then it is right, be confident, admit it if you are wrong once, and do not have a second time; Remember to calculate carefully. Because math masters are very fast. Write down the process on scratch paper as if it were a big topic.

Personally, I agree with it.

3. Big questions, follow the steps of ideas. To put it simply, it's OK to slow yourself down, don't often die on the 1+1=3 Zhao Benshan math.

I wish LZ a ...... in his studies

Difficult problems generally test your thinking, and if you think correctly, you will not make mistakes. And the general questions because they are more basic, everyone will know the knowledge points, and the questioners will generally have traps in order to test students, so simple questions can not be careless, especially the serious questions, many familiar questions are actually processed, you have to calculate it yourself, don't fill it in with the answers in your memory, in a word, treat them as unfamiliar topics seriously, the effect will be much better, don't be preconceived! Hope you learn better!

It's the same as when my kid was in his sophomore year of high school.

The method we take is: insist on doing "Little Problem Crazy" every day, insist on about 20 days (must be as required for the time), basically can control the wrong questions within 1, and by the third year of high school, the mathematics is basically stable at more than 135 points.

Choosing and filling in the blanks should be checked repeatedly in different ways, and you must not be careless, because the choices of the questioner are very confusing, as for the big question, as long as you can write it step by step according to the idea, there will be basically no problems. To put it simply, the process of writing a small question on scratch paper as a big question, you don't need to write it all, you can have a rough idea, I was like that back then, and the math was basically more than 140.

Solution: z(z-1)=z

z(z-1)-z=0

z(z-1-1)=0

z=0 or z=2

k is the solution of the unary quadratic equation z(z-1)=z.

k = 0 or k = 2

The parsed formula y=k-1 x is y=-1 x or y=2-1 x (x≠0).

z(z-1)=z

z squared - z = z

z square - 2z = 0

z*(z-2)=0

k=z=0 or k=z=2

And because it's an inverse proportional function.

So k can only be equal to 0

The analytic formula is y=-1 x

Solving the equation yields: z1=0, z2=2, and since k=z, we get the analytic formula, y=-1 x, y=2-1 x

The range of g(x) contains the range of f(x). f(x) is the range of the quadratic function over a closed interval, [ k 8,120 k]. g(x) derivative, ( 2 3) increase ( 2 3,1) subtract ( 1, increase, the interval is [ 3,3], the value range [ 21,111], then k 8 21 and 120 k 111.

Because the constant is true, only the max of f(x1) is required< g (x2) min is OK < p>

k is greater than or equal to 45Let f(x)=g(x)-f(x), simplify yourself, get an expression and then find the derivative, it may be at -3, 2, 3 three points to take the minimum value, bring in should be x=3, there is k-45 greater than or equal to 0

The method on the first floor is actually quite correct, and I will explain it to you in detail.

Be sure to see that the title says that f(x1) is less than or equal to g(x2).

Either f(x) is less than or equal to g(x), that is, the maximum value of f(x) should also be less than or equal to the minimum value of g(x), and the second floor misunderstood.

f'(x)=1/x-a>0

A>0, 01 a, monotonically increasing interval [1 a, + monotonically decreasing interval (- 1 a].

When a=0, x>0, monotonically increasing interval (0, + monotonically decreasing interval (- 0).

a>0, 00, increase the range (0, +

1) When f(x)=-e 2(x-1) 2+e 2x=1, f(x) takes the maximum value e 2

2)f(x)=-e^2(x-a/2)^2+(ae)^2/4)a/2>=1==>a>=2

The value range of a is a>=2

In fact, if you have some basic problems in mathematics, everyone will do them, and you can't close the gap between yourself and others. It's those problems that widen the gap. I'm in the third year of junior high school, and I'm about to take the exam, so it's the day after tomorrow.

But I don't worry about my math, because usually someone else might be late to do the last problem, and I've always had half an hour to sleep. This is mainly a matter of methodology. You can do the basic questions in the previous one, but it may not be easy to do, which will waste a lot of time.

You can put the score is not too big, and you will not do it empty, do it first, and avoid unnecessary loss of points.

Do you mean a perfect score of 100 when you say 88 above? It can't be considered good. It's better to aim a little higher for your abilities.

We had a perfect score of 130 and I wanted to set myself a goal of 125. Among them, the last question is difficult with 10 points, and the last question with multiple fill-in-the-blanks is difficult. Therefore, the maximum concede limit is 16 points.

After the exam paper is sent, you have to read the exam paper first, set a score limit for yourself, and then check those basic questions after completing the test paper, including those within the score loss limit, you can check it little by little later.

The other is the problem of nervousness, we have been doing 8 or 9 exam papers every day when we go home for the past two days, and we don't feel nervous when we get used to it. We all have to snack before the exam - the legendary relaxation = =|||If you really can't get over the nervousness, you can find something you like, sneak it to school, don't think about the test before the exam, just play games with others.

If you have a solid foundation, oh).

Maybe it's a personality issue, but I'm an optimist, so I don't think there is such a thing as test anxiety.

You can use my suggestions above as a reference, not necessarily all of them. Good luck with our exams

First, the most important mentality, self-confidence; 2. No points will be lost for basic questions, full marks will be given for mid-range questions, and more points will be scored for difficult questions; 3. Don't think forward and backward, do your best.