I made science magic

Just as Lin En thought, the extremely high demands did not scare off Lydia. Instead, it made the halfling girl high-spirited and read the design drawings very seriously.

After learning that some light and tough materials were needed to make an airship, Lydia immediately proposed that the camel leather that had been soaked in water and dried could be used to make the airbag of the airship. This material met the requirements very well and was usually used

On the sails of a large warship.

On the Sea of ​​Mist, the sail of the battleship they drove was made of camel leather. No matter how big the storm was, it could not be destroyed. It was very durable and reliable.

The frame of the airship airbag can be made from the branches of the magic paulownia tree, which has high tensile, compressive and bending strength...

Lydia talked endlessly. In the field of aircraft design, she was far inferior to Lin En, but she was very clear about the characteristics of various materials in other worlds.

Lin En silently made a calculation in his mind. If it were made according to the materials Lidia said, the performance of the airship would definitely be improved a lot, but the same cost would also be extremely high.

At least one hundred magic gold coins are needed...

Lin En thought about his little savings, coughed twice, and interrupted the girl's words. "Actually, this airship is just an experimental version. It doesn't use such good materials, just a little bit is enough!

"

"How is that possible? This is the first airship that can fly and turn in the sky." Lydia said with longing.

"I can only give you twelve magic gold coins as a deposit first." Lin En said a little helplessly, and took out a money bag, which was one of the few properties he had. The remaining money can only be waited for.

There are more students in the Olympiad mathematics class, and I will apply for some teaching funds from Hellram to fill it up...

Lydia shook her head and did not accept it. The novel knowledge that Lin En explained to her alone was worth more than a hundred magic gold coins, not to mention that this airship was directly related to whether she could enter the Iyetta magic.

College.

"Just think of these deposits as the tuition for the lecture just now. I will use the best materials to make it and start working on it from now on!" Lydia wiped the stains on her face and asked Darren to do the work.

The other halflings in the workshop called over, and she wanted to complete the airship within a month.

Looking at the busy halflings, Lin En wanted to help, but was stopped.

The use of magic may leave traces. It would be bad if Master Hellram thought that the airship was made using magic. Moreover, Linn was a customer, and there was no reason to let the customer do it himself.

In view of this, Lin En, who had nothing to do, could only take charge of the command from the side, watching those halflings who were only half his height running around carrying wood heavier than themselves.

…

The progress of making the airship was faster than Linn imagined. After working all night, one-sixth of the overall frame had been built. If it weren't for the large amount of camel leather used to make the airbags that needed special processing, it would have cost a lot of money.

If there is less time, it may not even take a month to build the airship.

However, such rapid progress did not come without a price. The halflings almost fell down from exhaustion, having devoted themselves to their work with all their enthusiasm.

Darren was lying on a solid board and snoring. Lydia was even more exaggerated. She slept directly on the frame of the airship, hugging a beam tightly, with saliva still at the corner of her mouth, and murmuring from time to time.

What.

Lin En shook his head, and immediately stopped a few halflings who were still preparing to work, moved Lydia and others who had fallen asleep into the house, and let them all have a good rest.

After becoming a wizard's apprentice, staying up all night had no impact on Linn's spirit, so after settling Lydia, who fell asleep due to exhaustion, he left the workshop.

After a whole day, Linn was somewhat looking forward to whether the wizard apprentices could solve the exponential formula he left behind.

Pushing the door open and walking into the classroom, a lot of confiscated coins were piled on the desk. What surprised Linn was that the classroom, which seemed a bit empty in the last class, was now packed to the brim.

A quick glance revealed that there were as many as one hundred, fifty or sixty people. If the classroom hadn't been big enough, they might not have been able to fit inside.

Is an exponential game so useful?

"Good morning, everyone!" Lin En's thoughts were running through her mind, but she didn't show any of them on the surface.

However, the students' reaction was more enthusiastic than he expected.

"Professor Lin En, are there any other Mathematical Olympiad questions?"

"I have already calculated all the numbers for thirty-six squares and forty-nine squares..."

…

Looking at the extremely excited wizard apprentices in the classroom, Linn was completely shocked. Are the students at Iyeta Magic Academy all a bunch of jerks?

He actually has such a high enthusiasm for doing math problems...

No, something must have happened that I don't know about.

Lin En thought this way, but was not in a hurry to confirm. Instead, he turned to look at Alok and asked. "It's been a day now. I believe you already have the answer, right? Alok?"

"Professor, the sum of these thirty-six squares is 68,711,947,6735..." Alok stood up quickly and answered tremblingly.

road.

He had confirmed this value many times and counted twenty manuscripts, but in the end the amount was too big. He only had one chance to answer. If he got one wrong number, he would be doomed.

Under Alok's anxious gaze, Linn nodded.

"Very good, the answer is correct."

"Then have you figured out the meaning of the formulas I gave you?" Linn asked again.

"I have already calculated it. The sum of the square numbers is equal to twice the last digit minus one!" Alok said confidently. After losing tens of billions of debts, he lost

Confidence was restored again.

In order to get the correct result yesterday, he spent all night calculating, and it was through confirming over and over again that he discovered this trick.

Lin En nodded again. Without much mathematical foundation, being able to find this rule in one day was considered to be barely qualified.

"Professor Linn, can I get the bonus?" Alok asked expectantly.

Peirce and the others looked at Alok with envy. That was a total of twenty magic gold coins. Although they had been counting for a long time yesterday, they were not as hardworking as the other party, and they could not find this pattern first.

Linn naturally knew that Hellram had set a bounty for the formula he wrote, but due to the professor's reserve, he couldn't take it himself.

But it’s still too far to get the money just based on the few patterns found!

"Alok, my summation formula is not that simple. You said, if I slightly modify the rules of the grid game, for example, the number in the next square must be three times the number of the previous square? Your theory is still applicable.

"?" Lin En asked with a smile.

The proud expression on Elok's face suddenly froze, and he immediately started calculating in the center of his mind, and then picked up a quill to write and draw on the papyrus...

"What if there is another stipulation that you need to place seventeen copper coins in the first grid?" Lin En asked again.

Elokk completely collapsed, his mind was filled with countless numbers...

This is so difficult!

He can't figure it out at all!

(ps: I want anything from new books.)