Become a master from now on

Chapter 88 I'm in Difficulty
With a bole like Heimiantan, Fang Chao, a thousand-mile horse, has fully exerted the level of strength he should have.

Black-faced carbon has a deterrent effect, which allows him to study mathematics more efficiently. It's just that every time he sees black-faced carbon's hair, Fang Chao has the idea that he should relax first.

"You can't keep staring at other people's foreheads, otherwise it would be unbecoming..."

After Zheng Yihang took math classes for a week on a weekend, Fang Chao finally mastered all the high school math tutorials, which took more than a month, plus a few days during the summer vacation.

At night, Fang Chao called Heimian Tan.

"Teacher Lin, I have learned all the high school mathematics. You can give me some test questions this week."

"Okay, you kid is awesome, wait and see how I deal with you, and see if you dare to hand in the test early for me!"

Fang Chao thought of Hei Mian Tan's furious appearance every time he handed in the papers early, and the corners of his mouth involuntarily raised slightly. Hei Mian Tan, you are obviously almost 50 years old, why are you still so easy to get angry like a child?You don't look like a mature adult at all, so that people worry about you...

Heaven has reincarnation, who the heaven will forgive!
Fang Chao, who never returned on the road of pretending to be coercive, finally encountered the most difficult question in history.

In the third week of special training, Black Face Carbon threw Fang Chao a math problem.

The title is purple.

In the plane Cartesian coordinate system x0y, let AB be the chord of the parabola y=4x passing through the point F (1, 0), and the circumscribed circle of △A0B intersects the parabola at point P (different from points 0, A, B).If BF bisects ∠APB, find all possible values ​​of 丨PF丨.

"I'm too difficult... In vain, I boast that no math problem can stump me... But now, I can't even solve a math problem from Black Face Carbon... I have become a salted fish. …”

"Why is this question so difficult...I'm so miserable, but I don't believe I can't handle it, Heimian Tan, just wait, you can't trouble me, one day I will dig out your Wuzhishan, I believe, I It will be out soon."

"A monkey like me, who can hold me down...hahahaha."

"If I want this sky, it can't cover my eyes anymore. If I want this earth, it can't hide my heart anymore. I want all living beings to understand my intentions. I want all the Buddhas to disappear in smoke!"

"..."

"No, no, it's still too difficult. I only have some simple ideas. If this continues, I will go crazy..."

Fang Chao was almost on the verge of collapse. Black Face Tan looked at Fang Chao's helpless look, especially when he was grabbing his scalp with his hands. He could feel that dozens of hairs might have fallen out, and he was happy. Incredible.

You kid, finally able to encounter math problems that you can't solve?

I thought you were so strong, I thought you were invincible, it scared me to death!
During the two consecutive weeks of special training, Fang Chao was able to easily deal with the problems posed by the black-faced carbon. Although it took a little more time, they were finally solved slowly. With such a talent, if you want to compete in the national finals It is not difficult to achieve certain results, but he hopes that Fang Chao is comprehensive, so he took out some more complicated question types to let Fang Chao continue to transform.

However, Fang Chao's appearance also made him a little worried. Will he use more force and make this kid decadent?
"Want me to give you some advice?"

"Mr. Lin, let me do it by myself, and give me another 10 minutes!"

"Oh, 10 minutes is enough? Interesting, okay, let me see what answer you can give me in 10 minutes..."

The current Fang Chao is indeed the same as Sun Houzi, but Wuzhi Mountain is really powerful and suppressed him. In terms of his Taoism, he has not completely become a Buddha, and he has not stepped into the ranks of fighting and defeating Buddhas. He cannot fight against the sky. Under Wuzhishan, he can only be a monkey who has a rebellious heart but will never climb Wuzhishan.

Ten minutes later, Monk Lin came again.

Fang Wukong's scalp exploded, but he had to come to Seng Lin for help. Only Seng Lin could help him out of the sea of ​​suffering.

"Mr. Lin, please, please help me, what should I do with this question?"

Heimiantan saw that Fang Chao was indeed on the verge of collapse, so he was very happy in his heart, and decided to help Fang Wukong escape from the Tathagata Wuzhi Mountain. He climbed up Wuzhi Mountain, and silently recited the mantra on Wuzhi Mountain: Veda equal share angle, absolute value of Fermat...

What the hell!

Holy shit! !
What the hell! ! !

Fang Wukong escaped from the Tathagata's Five Fingers Mountain, and his whole body suddenly became enlightened and full of energy. He instantly understood that this is what he was like. He has been trapped in such a demon for so long. He is really, possessed.

It shouldn't be like that, but he was stuck on such a question for nearly an hour.

"Fairy, watch me reveal your real body!"

So Fang Chao began to pick up a pen.

解：设A｛y1/4，y1｝，B｛y2/4，y2｝，C｛y3/4，y3｝，由条件知y1、y2、y3两两不等且非零，设直线AB的方程式为x=ty+1与抛物线方程联立可得y——4ty=0，与x=y/4联立得y4/16+{1+d/4}y+ey=0，该四次方程有y=y1，y2，y3，0这四个不同的实根，根据韦达定理得y1+y2+y3+0=0，从而y3=-（y1+y2）。

"Hmph, it's very simple. I had to think about it for so long just now. I was unhappy..."

Soon, Fang Chao continued to answer.

Because PF bisects ∠APB, we know from the angle bisector theorem, 丨PA丨/丨PB丨=丨FA丨/丨FB丨=丨y1丨/丨y2丨

……

……

（y1+y2）=192+（y1y2）=208
……

因y1+y2=4√13＞8=丨2y1y2丨

……

丨PF丨=√13-1.

"Perfect!!"

Fang Chao solved a math problem and was very happy.

[System prompt: You have been instructed by a famous teacher, successfully solved a moderately difficult math problem, and obtained 300 Xueba points. Please continue to work hard on the road of learning and work hard. 】

So far, since Hei Mian Tan gave him special training, Fang Chao Xueba's points improvement speed has been accelerated several times, and now, his total Xueba points balance is 10326 points.

Xueba's total points broke through [-] again!
And his understanding of mathematics is getting deeper and deeper, and all the knowledge of high school mathematics is in his mind.

The days passed unknowingly, and the rematch of the National High School Mathematics League is getting closer and closer.

The selection of this year's CMO National Finals event was finally decided on Jinling University.

"Jinling University? It is said that there is a senior there who is particularly powerful..."

　Thank you for the 600 starting coins rewarded by 'Longtianbu' children's shoes.

　　
　
(End of this chapter)