God-level Scholar: Start with Mecha-making

Chapter 3 Math Teacher Can't Take It Anymore
Luo Le'an seemed to have encountered a very novel thing, so he was very patient, "Since you said that you did this question, then I will make another question to test you."

topic:

It is known that when x≤0, f(x)=2 to the power of x, when x>0, f(x)=log2x (2 is the base of the logarithm), g(x)=f(x)+ x+m, if g(x) has two zero points, then the value range of m is ()
A. [-1, +∞)
B. [-1]

C. (0, +∞)
D. [0, +∞)
Luo Le'an directly wrote down the topic neatly on the blackboard, as if he was afraid that Fang Heng would blame his bad writing on the blackboard for his inability to do so.

This is a range multiple choice question!

Each option is very similar.

So if you are a little careless, even a student with a good grade will make a mistake because of the value of the range.

Not to mention other students who simply rely on Meng.

Don't think that there is a 25% chance of choosing one of the four. Even if you choose one of the two, there are many people who choose the wrong one!
When other students in the class saw this question, they also seemed to be facing an enemy, and they all took out draft paper, pens and other tools and waited for it.

"Huh, huh, huh, I don't know how to do this question, so I'll get a C."

"What are you thinking, I choose B, you see the biggest difference between B and C is..."

"I have no idea yet..."

Why are you frustrated? This question is not for you.

"Fang Heng, aren't you very capable? Tell me about it!"

"I don't believe it, I've been proving the Dao for so many years, but I can't compare to a scumbag!!"

"If he Fang Heng can answer it, I'll live stream it!!!"

Everyone focused their attention on Fang Heng.

Now Fang Heng really regrets that he didn't read the almanac when he went out today, and he was always shot for no reason.

"A."

Fang Heng raised his head confidently and met Luo Le'an's eyes.

Luo Le'an's heart trembled, and he asked, "What about the process?"

Fang Heng was a little surprised: "Isn't it just algebraic two numbers, can we get the answer?"

Crowd: ? ? ?
Fang Heng said again: "It's over!"

That's all for now?Gone? ?
"Are you fooling around? You can solve such a problem by algebraic two numbers?"

"I have no idea at all."

"Fang Heng, be careful, if you fool the teacher, it will be difficult for you in the future."

Everyone was shocked by Fang Heng's answer.

But only Luo Le'an still patiently asked again: "Which two numbers?"

"plus or minus 1"

"Teacher, is his answer right? I think it's probably wrong."

Luo Le'an's eyeballs almost fell out.

Without any response to the students' questions, he said directly: "One more!"

topic:

It is known that the four vertices of the triangular pyramid P-ABC are on the spherical surface of the ball O, PA=PB=PC, ∠ABC is an equilateral triangle with a side length of 2, E, F are the midpoints of PA and AB respectively, ∠CEF= 90°, then the volume of the ball O ().

A....

The teacher has not had time to say options.

Fang Heng said directly: "The square root is 6π."

This question is about the problem of catching the ball and catching the ball in geometry.

It is also the most troublesome problem for ordinary students. This kind of problem is not only difficult to think about, but also requires a lot of calculation.

If it is in the examination room, I believe that many students will take a roundabout way or give up the strategy.

"The topic is very simple!!"

Fang Heng's answer was even more simple and rude.

"Actually, if you are more careful, you should find that it is a "regular tetrahedron model"...so you can directly find out the center and radius of the sphere!"

"Fuck, it's true!"

"You see it is PA=PB=PC, so..."

"Wow, whoa, why didn't I think of that just now!!!"

Luo Le'an clicked his tongue. Now he is as excited as when Archimedes found a way to calculate the crown.

Is this question easy? ?

"Come again!"

topic:

It is known that a, b, and c are the opposite sides of the three interior angles A, B, and C of ∠ABC, a=2, and (2+b)(sinA-sinB)=(cb)sinC, then the maximum value of the area of ​​ABC for--.

With that said, Luo Le'an began to draw pictures.

This was the finale of the fill-in-the-blank questions in the college entrance examination.

He still can't believe that this Fang Heng can be so wicked.

You must know that this question stopped many so-called academic masters back then.

If those people could win this question back then, they might have stepped into 985, 211, and might have met Tsinghua University and Peking University from then on.

But just as Luo Le'an started drawing, Fang Heng spoke.

"The answer is square root 3!"

The picture of Luo Le'an is not finished yet.

Click!

His chalk broke, and he turned around in surprise, staring at Fang Heng closely.

If it is said that one and a half times can be deceived and guessed, but what about two or three times?
What the hell, how to guess the fill-in-the-blank questions! ! !

I haven’t guessed one in ten years (shh, it seems to have exposed something, hahaha)
"What's wrong with the math teacher?"

"Is that the right answer?"

"It should be right, I remember I did this question before, but I forgot how to do it, but the answer seems to be this!"

"That's right, that's right, look, the answer to the same question is the root number 3, that's amazing!" A classmate found a copy of "Five-Year College Entrance Examination and Three-Year Simulation" from under the desk. Say.

"Is this the gap? I just finished reading the question, and everyone's answers came out. Woooooo..."

"Student master, absolute master student!"

"If you don't make a song, you're done, it's a blockbuster!!"

The corners of Luo Le'an's mouth trembled slightly, but his eyes were shining brightly: "Fang Heng, come out with me."

Luo Le'an has decided that he absolutely cannot let this kind of academic bully remain anonymous and unknown to the world.

It must have been because of my own negligence that I didn't discover this great talent.

It's really embarrassing to say.

Make it up.

Yes, we must find a way to make up for it.

This kind of talent should shine like the stars in the sky, dazzling in every way.

Fang Heng: "Teacher, where are you going? Isn't there a class here?"

"Other students study by themselves!" Luo Le'an said without any discussion.

"I'll take you to your homeroom teacher. You're the most amazing one I've been teaching for so many years."

"Can you tell the teacher how you usually study?"

Ah this!

Is this for praise or for derogation?

Is this the rhythm of public execution?

Fang Heng scratched the back of his head, and said a little embarrassedly: "Teacher, how am I usually? Don't you know?"

"go to bed!"

At this time, Fang Heng's classmates couldn't help giving him a big thumbs up, they could speak so confidently in class and sleep.

"Could it be that you usually go home and study by yourself?"

"That's right, that's the way it should be. You usually sleep in get out of class, but after class you don't know where to go."

"Just tell the teacher something heartfelt. Do you think that the teacher's topics in class are too simple, so you go to sleep?"

Now Fang Heng is no less surprised than Luo Le'an just now.

The once aloof math god suddenly turned into a little girl.

This brain supplement ability is really possible.

(End of this chapter)