Homework won t be done for comfort! The homework won t be broken, which god will do you a favor

I didn't do anything, hehe.

I should be happy. Fortunately, I can't do it now, and I still have time to improve myself, if I find out that I can't do anything when I take the college entrance examination, then it's called sadness. Isn't it?

If you know how to do all the questions, why do you go to school? It's because I can't do it that I know that I have defects, and then I can improve it in time.

If you don't know how to do it, you will ask the teacher and ask your classmates, and if you understand it, you will have one less question that you can't do.

Summarize more when doing the questions. Hope you succeed.

Don't be frustrated. Believe in yourself.

Won't ask me, I won't say again.

I won't do it, and no one else will do it.

Think for yourself. I use all copying.

Hahahaha. I didn't do well in the exam.

The multiple-choice questions are so obscure, and the quiz questions really don't just learn from others.

The child doesn't have to be sad, and neither will the sister.

Don't be afraid, not everyone in this world is smart, and stupid people will live like this.

…Forehead ......What a strange question......

Hawkers, it's normal that homework won't be done, and I usually look at the example questions in the book and ask the teacher more, so that I can develop a good idea of doing the questions. After all, the key is not to solve an assignment problem, but to learn how to solve this type of problem.

Many celebrities don't do their homework or ask others to help them write when they are young. You're so much better than them.

Question 5, (1) the definition domain is the range of x that is meaningful to the function, so x is not equal to 1, and x is greater than or equal to -4, (2) the following two values are to substitute -1 and 12 into the original formula respectively, f(-1)=3-root number 3, f(12)=-38 11

In question 10, (1) also substitutes 2, 1 2, 3, and 1 3 respectively, and the results are: 4 5, 1 5, 9 10, 1 10, (2) According to this result, it can be seen that when two x are reciprocal to each other, the sum of the results obtained is 1When proving, you can decompose the original formula into f(x)=1-1 (x 2+1), divide the numerator and denominator of the fraction on the right by x 2, you can get f(x)=1-(1 x 2) (1+1 x 2)=1-f(1 x), and the shift term can be obtained, f(x)+f(1 x)=1, so the conjecture can be proven.

3) According to the above results, the original formula = (f(2) + f(1 2)) + f(3) + f(1 3)) + f(2011) + f(1 2011)) = 1 + 1 + ......1=2010

It's already very detailed, so please ask if you don't understand.

High math, the most annoying thing I've ever learned. No.