It's not that difficult to open a hospital in another world, right? Chapter 1372 Teacher, don’t run away! I promised you to help me! (Monthly ticket adds 1 update)
Chapter 1372 Teacher, don’t run away! I promised you to help me! (Monthly ticket adds 1 update)
Gretel also wanted to ask the teacher if you know Fourier Transform. If not, I will teach you - but he didn't dare.
He asked rashly, and when the time came, the teacher gave him three consecutive shots, and he asked the question:
"Why is this formula called Fourier transform?"
"Where did you learn that?"
"How do you know this formula works?"
If he can't answer a single question, he's looking for death!
Alas, it's all his fault for not paying attention to the progress of magic and other developments before the Council.
If he had read papers frequently and noticed the mathematical achievements before the parliament, he would not have such a headache now.
There was no other way, Grete held a clam shell, a picture, and a basic signal given by the teacher, and plunged into the library of the Magic Academy.
After flipping through the pages desperately, Grete found helplessly that at least in the records of the Elf Magic Academy and the parliamentary journals collected by the elves, there were no records related to Fourier transform.
Then there was nothing he could do, he had to do it himself.
The silver dragon girl quickly discovered Gretel's changes. During this period, he was buried in his study, neither reading spell books nor practicing magic.
What surprised Cerela even more was that he didn't even have surgery!
Every day, every day, I lie down on my desk, write, write, calculate, write, write, calculate again...
The pile of manuscript papers on the desk ranges from a few thin sheets to a knuckle-thick stack;
Then from a knuckle-thick pile to a half-palm-thick pile;
From neatly stacked to flying everywhere, on the table, on the cabinet, on the chair, on the floor, everywhere...
"Grete what are you doing?"
Serila couldn't even get in. She stood on tiptoes, holding the door open, and put her head in to shout. While shouting, she also gathered a force field wall to block the wind outside the door:
Don't let a breath of wind blow in!
The wind blew in and messed up the manuscript paper. When Gretel turned around to flip through it, he couldn't find it. It disturbed his thoughts and caused him a lot of trouble!
"I'm calculating..."
Gretel weakly raised her head. Her face was miserable, her eyes were dull, and her bangs were flat on her forehead.
Even if the power of nature nourishes him day and night, so that there are no dark circles around his eyes, the look of being crushed for three days and three nights, and hanging on the cliff for seven days and seven nights, still makes Cerela feel particularly distressed:
"Grete, what's wrong with you? If you can't figure it out, don't forget about it. Let's take a rest first, take a bath and have a full meal? Look at your appearance now. Don't tire yourself out before you figure it out.
Got it!"
"It's not...I'm really fine..."
Grete grimaced in calculation. He had also studied Fourier transform in college - he had really studied advanced medical mathematics and so on. He had not skipped this lesson.
The problem is, there is still a huge gap between what was taught in class and what he can now master and use the formula to calculate MRI images.
Not to mention, he has to explain clearly to the teacher why there is this formula, what is the essence of this formula, and what can it be used for...
The Fourier transform is still a particularly complex formula! It has various variations in different research fields, and each variation is enough for Grete to drink a pot!
"Convergence properties... symmetry properties... parity and even properties... linear properties... time shift properties... frequency shift properties... scale transformation properties... convolution theorem... time domain... frequency domain..."
Gretel looked gloomy and his head was as big as a bucket.
Every property is described by a formula. Even if every formula is in the textbook in his previous life, he has to figure it out by himself!
Alas, it is so difficult for him...
Grete lamented and admired the achievements of his predecessors while burying himself in his study day and night.
He just followed the textbook, became familiar with it again, and deduced the formulas. It was so difficult. How difficult was it for Fourier to create these formulas...
If these elders had the chance to travel through time, everyone could become a legendary mage, right?
After struggling like this for a month, when the Lord of Thunder came to check his homework next time, he was finally able to take out a thin booklet and send it to the teacher:
"Teacher...this formula may be able to help you..."
The Lord of Thunder opened the book with an inexplicable look on his face. On the first page, he glanced at it and saw that it was all about trigonometric functions, which were unremarkable;
On the second page, I glanced at it again. The expansion and transformation of trigonometric functions, at the level of the little kid, should have been known by a long time;
The third page, the expansion, transformation and curve of trigonometric functions. It’s a bit interesting. It seems that no one has explored this direction...
As he looked at it, he looked in. His fingers turning the pages of the book became slower and slower, and his eyes focused on it for longer and longer.
On the monocle, blue light flashed crazily, and dots as fine as sesame seeds rolled at high speed. For a time, countless numbers, formulas and curves rushed down the monocle like a waterfall...
Grete stood beside him fearfully, staring at the teacher. Teacher, you don’t want to stand here and understand the Fourier function in one go, do you?
Whether this booklet is thick or thin, it has dozens of pages!
Dozens of pages, Fourier transform, various variations of Fourier transform, everything he had in the textbook in his previous life, everything he had seen elsewhere, everything he could deduce, it was all on it!
Teacher, although you are a legendary mage, your mental power is extremely powerful, and your computing power is approximately equal to a computer...if it is not a supercomputer...
However, even if it is a computer, it still needs to enter a program!
Teacher, how many hours or days do you plan to use to figure out all these formulas? How about we go to the study room and read it? How about we sit down and read it?
I deduced...oh no, copy...oh no, it took me a month to become familiar with these formulas. Teacher, you should use them in a day no matter what!
Let’s not be punished by standing here, okay?
However, the Lord of Thunder had already stood still, looking as if he was in a state of confusion, with only a trace of his soul remaining on the book.
Grete lamented in his heart, and could only be respectful and stand sideways for ten minutes, twenty minutes, half an hour... one hour...
Even though Grete had the physique of a level 14 nature priest, he still felt that his back was sore and his legs were weak from standing, and he was very tired. When the teacher wasn't paying attention, he quietly took a half step back, summoned a floating saucer, and sat on it.
Looking at the teacher again, I still felt a little unsafe. After thinking about it, I summoned a floating saucer, lay down on it, and started to demonstrate the surgical method of Farlow's quadruple pig on the spot.
Well, when the teacher comes to his senses and sees me busy, he will definitely not dislike me for not standing with him!
The sun's shadow slowly moved across the sky, then slowly tilted westward. At first, Grete glanced at the teacher from time to time, but gradually, he became more focused and devoted himself wholeheartedly to the surgical deduction.
Heart anatomy, cardiac electrophysiology, hemodynamics...therapy, encouragement, anesthesia...the small spots and cord-like foreign bodies observed in Prince Anio's heart...
Gretel was writing and drawing, so busy that he didn't even raise his head. The light around him gradually dimmed, and several light balls quietly rose up to illuminate him, and he didn't even feel anything.
I don’t know how long I have been busy, but there was a thunderbolt, tearing apart the silence. Gretel suddenly raised his head, and saw a bolt of lightning falling across the sky, shining through the sky and the earth, and in the lightning, the Lord of Thunder had disappeared...
"Teacher!" He raised his head reflexively and shouted:
"teacher!"
"Teacher seems to have gone to the beach..." Cerela whispered. Gretel raised his head in the direction she pointed, turned around and ran, crashing into the nearest big tree:
Tree magic!
Tree magic!
Tree magic!
The nearby big trees and ancient trees opened passages to me, allowing me to catch up in the footsteps of the teacher!
"Bad Gretel! You didn't even take me with you!" Cerela stamped her feet in annoyance. As a silver dragon, her affinity with nature is not as close as Gretel's, nor has she learned how to teleport through big trees -
In the blink of an eye, the silver light surged, covering her whole body. The silver dragon spread its wings, flapping the strong wind, and soared into the sky.
Amid the huge wind noise, one could still hear the silver dragon's clear and crisp chatter, which kept coming:
"Bad guy Gretel! You won't even take me with you! I won't take you flying next time! - I'll fly by myself and see who's faster! Maybe you can't be faster than me? Hehehehehehe!"
Gretel didn't hear her moans at all. He was so anxious that he followed the path pointed out by the ancient tree, teleported all the way, and chased after her.
After chasing him to the beach, he saw the Lord of Thunder standing far above the waves, with wind and clouds surging in front of him. A huge fireball hung in front of him, spinning constantly, slowly getting smaller, smaller, smaller...
From red to yellow, from yellow to white, from white to cyan, from cyan to blue, from blue to purple.
The purple became darker and darker, and Gradually, Grete could no longer see the fire bead, but the majestic pressure became heavier and heavier. Even though the sea was a kilometer away, it was so heavy that he couldn't breathe.
"what happened?"
The wind roared behind him, and Cerela returned to her human form, landing lightly on the ground and next to him. Grete shook his head blankly:
"I don't know. Teacher..."
Who knows what inspiration the teacher got from the formula?
The application scenarios of Fourier transform are very wide, including physics, number theory, combinatorial mathematics, signal processing, probability, statistics, cryptography, acoustics, optics...
And initially, it was proposed as a tool for analytical analysis of thermal processes, thermodynamics, etc., and it is very closely related to the plastic energy system, right?
Before he finished speaking, the Lord of Thunder suddenly raised his arm and made a throwing motion, and then quickly retreated.
One second, two seconds, three seconds, he flashed beside Gretel, raising his hands to build barriers.
There was a loud bang, and the entire sea surface suddenly dented, and then, an overwhelming shock wave rolled up huge waves and rushed towards them head-on!
If the Lord of Thunder had not set up a barrier in advance, Gretel would not have dared to say that he would have been able to withstand the aftermath of this blow...
"You're fine." The huge waves rolled up and kept raging. The Lord of Thunder turned his head and looked at Gretel, with blue light shining brightly on his monocle and tiny electric sparks dancing:
"You should study it by yourself for a while first. Your formula has given me some ideas. Your senior brother's project is almost completed..."
As he spoke, his body disappeared in a flash. Gretel was left holding out his arms in vain, raising his head, and looking towards the direction where the Lord of Thunder disappeared:
Hey, teacher, why did you run away like this when you disagreed with me?