The love of functions and derivatives

The working hours defined by these mathematics follow the school, and they serve the testers of the college entrance examination, so their working hours follow the time of the senior high school students to be precise.Therefore, as we all know, the summer vacation of the third year of high school is only one month. These mathematical definitions cannot broaden one's horizons and improve one's self-cultivation during the summer vacation, but continue to work crying.

A senior high school student said: Senior high school not only does not deserve to have a two-month summer vacation, but also does not deserve to have weekends without monthly exams.

Solid Geometry is an activist. Since he is interested in a person, he will definitely find a way to contact him.However, Stereo Geometry thinks that if she is too active, she will lose value. She must take the initiative to approach derivatives in an elegant, reserved, dignified, well-behaved and confident manner. A very good reason, but it's a pity that solid geometry and derivatives are rarely put together to solve problems, so there are very few opportunities for them to get in touch due to work reasons.

At this time, the three-dimensional geometry still likes to play guess my mind. Later, she was too lazy to practice Tai Chi, so she just wrote a note asking if the ellipse was interesting to her, but this is something for later, so I won’t go into details for the time being .

Although the two are rarely put together to ask questions, just like the part of the normal distribution that belongs to 3σ, although the probability is so small that it is less than 0.1, it is not without it.Finally, God paid off and waited for others, so that solid geometry waited for this opportunity.

The college entrance examination questions will not be particularly difficult, so many students will get the most brilliant scores in the history of the college entrance examination, because the test papers are simpler than the previous "top secret", "pressure questions" and "famous teacher" papers.However, teachers who give mock questions like to play with twists and turns, and like to test multiple knowledge points in one question, even super-syllabus knowledge points, so as to show their teaching level. Called to increase the degree of discrimination.

So there is such a finale choice of three-dimensional geometry, which needs to find a maximum value. According to the problem-solving ideas of the topic, a function must first be expressed, but this function is relatively complicated, so it is necessary to find a derivative and analyze the monotonicity of this function.

Finally, three-dimensional geometry and derivatives joined forces for a joint exam mock question.The sorting out of simulation questions is one of the tasks of mathematical definitions, especially when multiple knowledge points are involved, it is also necessary to communicate between two mathematical definitions.

So finally, the opportunity to touch derivatives in solid geometry has come.