Otaku Engineer in Great Tang Dynasty Chapter 902: Installed 1 Bobby!

In the office.

When Liu Hongyuan asked what is the principle of equal opportunity, Li Zexuan couldn't help but rubbed his eyebrows, because the explanation of this question is too complicated! After thinking about it for a long time, he still didn't know where to start, so he could only say:

"Dr. Liu, these so-called opportunities are equal. It is difficult for juniors to explain to you for a while. In the future, arithmetic will derive another subject called "Probability Theory and Mathematical Statistics". Wait for you to finish reading that book. Later, you will generally understand what equal opportunity is. In addition, when mathematics develops to the advanced stage, the same result can be calculated through the method of pure mathematics. That method is more complicated, and the juniors will not show it!"

In fact, the problem of Buffon's needle throwing can be proved by pure mathematics. Two mathematical abstractions are used in the middle. First, let the midpoint of the needle rotate around a certain point on the basic unit line segment, and integrate to get two areas. Then, let the needle move horizontally on the line segment of the basic unit, and use definite integral to get the ratio of the two volumes, and finally get the relationship between the probability of thin needle pressure line and π.

However, knowledge of trigonometric functions and calculus is needed in this process, and it will be even more troublesome to explain!

But then again, when a person reaches that height in mathematics, he will not use the "stupid" method of needle-throwing experiment to find the pi! Because the method of trigonometric function plus infinite series can get a more accurate pi.

According to records, the British mathematician Machin used the formula in 1706: π=16arctan(1/5)-4arctan(1/239) to calculate the value of π, breaking the 100-digit mark. Among them, the value of arctanx can be Calculated by Taylor series.

At this time, Liu Hongyuan couldn't help but be surprised. Hearing what Li Zexuan said, everyone feels that the very advanced new mathematics is just in its infancy. There will be a whole set of advanced theories in the future. Other knowledge will be derived!

Here, how old is Li Zexuan this year? How can there be such a terrifying amount of knowledge in your mind? Is he going to stand on his own and become a leading figure in the academia?

At this moment, Liu Hongyuan can no longer pursue the "principle of equal opportunities". There is only horror in his heart. The look in Li Zexuan's eyes is like a monster!

"Gudong~!"

It was Xu Hongzhi who was stunned for a while and couldn't help but swallowed his saliva, thinking that when he first met Li Zexuan (when the store was checking the accounts), he wanted to give him a finger on Li Zexuan! He only learned today that he and Li Zexuan are not on the same level at all, and can be described as the difference between heaven and earth.

"Shanchang, you have mastered the advanced stage of mathematics?"

Xu Hongzhi came back to his senses and asked tentatively.

Li Zexuan tilted his head and thought for a while, and said: "Seven or eighty percent! I didn't want to study, so I learned seven or eighty percent!"

What he said was the truth. In high school and college, his math scores were not outstanding, at best they were excellent, not as good as those who got full marks every time!

However, he has such a strong mental power in this life, and if he is given another chance, he will definitely be able to compare to those academic masters in his class.

"Puff~!"

Xu Hongzhi and Liu Hongyuan almost vomited blood. First, they were depressed. Li Zexuan only learned 70% to 80% of them and was able to "sling" the two of them. Second, he was angry, because Li Zexuan had such conditions to learn this knowledge. It's not easy to learn, it's a violent thing!

"For Yonganhou's current mathematical attainments, can the ancestor rate be calculated to more than seven decimal places?"

After struggling for a long time, Liu Hongyuan asked such a question. He mainly wanted to see whether advanced mathematics was as powerful as Li Zexuan said, not to deliberately embarrass it.

Li Zexuan smiled secretly in his heart, this time he could "pretend to be forced" again, because he had deliberately backed this thing in order to "pretend to be forced" in his previous life, but until his "accidental death", no one gave him a "pretend to be" Chances are, now Lao Liu is here to "send a pillow" to him!

"Hehe! Of course! The kid has spare time, forget it a few times, now read it out and share it with the two gentlemen, two and listen!"

Li Zexuan gave a chuckle, then stood up, stood with his hands in his hands, and started the pretense mode: "Three points one four one five nine, two six, five three five eight nine seven, nine three two, three eight four, six Two, six, four, three, three, eight, three............"

Liu Hongyuan was originally just a random trial, but when Li Zexuan spoke, he couldn't stop at all. In a blink of an eye, he reckoned to eight, nine, and ten decimal places, all of which exceeded the accuracy of Zu Chongzhi's ancestral rate, but Li Zexuan still didn't stop.

"...Three seven five one zero, five eight two zero nine, seven four nine four four..."

Listen, Liu Hongyuan and Xu Hongzhi seemed to have heard something wrong. Although Li Zexuan spoke very fast, they still heard Li Zexuan as if reading numbers according to a certain rhythm.

Yes, it's rhythm!

The two couldn't help but look at each other, they somewhat suspected that Li Zexuan was thinking about it.

"...Three four eight, two five, three four two one one, seven zero six seven nine! Whoops, okay, the juniors only remember the first one hundred for the time being, the two gentlemen can write them down, Leave it to be verified later. There is absolutely no mistake in the top 100. I, Li Zexuan, guarantee it with my personality!"

After reading for a while, Li Zexuan finally stopped. He let out a soft breath and said to the two people in front of him.

The reason why he was able to memorize the top 100 of Pi in his previous life was mainly through a speculative method:

First imagine a drunkard drinking in a mountain temple, drunk to death in the ravine:

"One temple on the top of the mountain, one pot of wine (3.14159), Erle (26), three pots of mine are not enough to eat (535897), wine kills you (932)! Can't kill (384), happy and happy (626). Forget it if you die (43383), Erqigou (279)." [Top 30]

Next, imagine how the father of the "dead" feels after he learns of his son's "death":

"My painful son (502), death in vain is sad enough (8841971), leaving it to Shangougou (69399)." [15 people]

Imagine the scenario where the father of the "dead" goes to the ravine to find his son:

"I have low back pain (37510), I am afraid that you will freeze for a long time (58209), and think about miserable things (74944)." [15 people]

Then, it was the father who found his son in the ravine and rescued him, and the son knew his way when he was lost:

"I save my children (592), caves (307), not to stay (816). The neighbors are happy (406), the children are not happy (286), the children hurt my dad for a long time (20899). My dad does not understand joy ( 86280).'Think twice (348)!' Erwu (25). Think twice before Yiyi (34211), and wait for his wife to enjoy his time (70679)." [Last 40]

That’s it~ IndoMTL.com~ Isn’t the top 100 of Pi a good memorial?

(Ha, just ask you 6 no 6)

Don’t slip away, Xu Hongzhi and Liu Hongyuan didn’t know, but when they heard Li Zexuan packing up the tickets so solemnly, their expressions became solemn, because Li Zexuan never guaranteed anything with his personality. The above is equivalent to swearing by the sky (cough, ancient people didn't know the slogan "I use my personality to guarantee")! Immediately afterwards, the solemnity on their faces turned into horror. If what Li Zexuan said was true, it would be too scary! Zu rate one hundred digits after the decimal point, this, Li Zexuan, this is the **** who wants to break the academia!

Seeing the deep shock on the faces of the two, Li Zexuan couldn't help feeling a little proud, and finally put on a big comparison! But Xu Hongzhi's next sentence made his face suddenly black.

"Ahem, Shanchang, can you read it again, let's take notes!"

…………………

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