Soon, someone went to bring the blackboard over, and everyone in the audience saw that there was a lively scene to see, and they immediately became happy, and sat on the ground one after another, waiting for the show to begin, everything was ready, Lin Yuan said to Xiao Dezhang: "Do you think you painted it yourself, or did you find someone to paint?" ”

Lu Fang whispered in Xiao Dezhang's ear: "My lord, you can draw it yourself, don't paint too much, just draw three."

Xiao Dezhang hesitated and asked, "Isn't the more the better?" ”

Lu Fang pointed to Lin Yuan's laptop and said: "That guy has extraordinary skills, yesterday there were sixty sets of numbers, Lin Yuan used it for a while to finish, if we hadn't calculated it in advance, knowing the result, we would have really lost to Lin Yuan!" So if you draw less today, we will have a better chance of winning. ”

Xiaode frowned, and said angrily: "Since you are not completely sure, why do you want to agree to re-test?" ”

Lu Fang was embarrassed and said, "Aren't I also thinking about fighting for the face of adults?" ”

When Xiao Dezhang heard this, he immediately said angrily: "Ridiculous! Ridiculous! If he doesn't agree to Lin Yuan's competition, even if he doesn't kowtow and make amends, he can leave us with a handle that breaks his promise and gets fat, it's good now, if he loses, his previous efforts will be wasted! ”

Lu Fang was scolded so red that he didn't say a word, Xiao Dezhang took a deep breath and said, "Okay, now is not the time to say this, you still have to do your best to defeat Lin Yuan!" ”

Lu Fang reluctantly agreed, Xiao Dezhang picked up a piece of chalk, walked to the blackboard, and just about to draw, he heard Lin Yuan say: "Draw bigger, it will be convenient to use sand for a while to measure." ”

Xiao Dezhang looked at Lin Yuan and didn't speak, but he drew three big unequal quadrilaterals on the blackboard, threw the chalk into Lu Fang's hand, and returned to his seat, Lu Fang said to Lin Yuan: "Lord Lin, can you start?" ”

Lin Yuan smiled and said, "This quadrilateral represents the four unequal fields, but the fields are too barren and need something." ”

Lu Fang looked at Lin Yuan in surprise and asked, "Something?" What do you mean? ”

Lin Yuan picked up the chalk from Lu Fang's palm, pinched it on his fingertips, and landed in the center of the quadrilateral, and then drew a zigzag line at random, Lu Fang hurriedly said, "You, what are you drawing blindly?" Before the words fell, he saw that Lin Yuan had already formed a strange arc in the middle of the quadrilateral.

Lu Fang frowned and said, "What are you painting?" ”

Lin Yuan said with a smile: "Unfortunately, there happens to be a pond in the middle of this field, and farmers usually carry water in it!" ”

Lu Fang said anxiously: "Nonsense, how can there be a pond in the field?" ”

Lin Yuan smiled: "You haven't seen all the fields, how can you know that there are no fields and ponds in Ludao?" Even if there isn't, can't the farmers dig one up themselves? ”

Lu Fang was speechless for a while, and Lin Yuan then drew an arc on the two fields behind, and said: "Now that there is a pond in the field, the area of the pond should be subtracted when calculating the land area, okay, you measure it first, and then I will measure it after I finish it, and then we will start counting together, don't play tricks!" ”

After Lin Yuan finished speaking, he turned around and sat on his desk, Lu Fang called a subordinate to step forward to measure, and the subordinate approached the blackboard with a ruler and a measuring angle, and whispered in Lu Fang's ear: "My lord, how can the crooked arc above be counted?" ”

Lu Fang whispered: "Use the cutting technique to calculate!" Cut the arc into several small squares! ”

The subordinate said: "But if you cut less, you won't be accurate, and if you cut too much, you will be slower......"

When Lu Fang heard the words of his subordinates, he immediately said, "You can't cut as much as you want, so what do you say?" Less nonsense, hurry up and test, and calculate after the test! We can't calculate accurately, and Lin Yuan may not be able to calculate accurately! ”

After his subordinates promised to finish the test, Lu Fang said to Lin Yuan: "Now it's time for you to test." Then Lu Fang saw Lin Yuan promise to walk to the blackboard, but he didn't have a ruler in his hand, Lu Fang thought curiously: "Lin Yuan doesn't use a ruler?" So what did he use to measure it? ”

When he was surprised, he saw Lin Yuan take out a square-shaped thing from his pocket, aim it at the figure on the big blackboard, and then press it on that thing, and then he heard a "click", and that thing actually emitted a dazzling white light! Lu Fang couldn't help but ask, "What are you holding in your hand?" ”

Lin Yuan turned off the photo shooting function of the communicator, and then said with a smile: "Ruler, a ruler that can shine, can also measure at night." Alright, let's get started. ”

Lu Fang hurriedly said, "Okay, let's start now!" As soon as Lu Fang's words fell, his subordinates began to calculate nervously, and Lin Yuan smiled in his heart: "You guys just calculate slowly, how do you calculate the three irregular arcs I draw?" The area of this irregular graph can only be calculated by integrals, and I don't believe you can integral! Even if you can integrate, those curves are curves with complex expressions, and you can't calculate them at all. ”

Thinking of this, Lin Yuan looked at his computer and thought: "I input the picture directly into the computer, and the optical recognition software inside will automatically extract the graphics, and then establish a coordinate system on the curve to determine the value of each point, and then use mathematical methods to calculate a curve, use this curve to fit the original curve, and then calculate the integral value according to this curve, the accuracy is beyond your reach!" ”

Lin Yuan thought as he transmitted the picture on the communicator to the computer, he had already written the program, as long as the picture was entered, the computer would automatically process the data. Lin Yuan didn't delay this time, he entered the picture into the computer as quickly as possible, and then typed in the start command, and a progress bar immediately popped up on the screen to show the completion of the task.

Lin Yuan watched the progress bar fill up rapidly, and thought in his heart, "This calculation is not large, it should be completed within three minutes." Thinking of this, he raised his head, looked at Lu Fang's subordinates who were busy, and thought to himself, "This time you have no chance of winning!" ”

Lin Yuan was thinking about it, the computer made a "ding" sound, which was the prompt sound of the end of the operation, Lin Yuan looked at the three data that popped up on the screen, and then looked at Lu Fang's subordinates who were busy, and thought to himself: "I'm too fast, right?" Shouldn't you wait for them for a while? Thinking of this, Lin Yuan casually clicked on the minesweeping game, and waited until the red flag was inserted at the back of the most Lu and the blank space at the back of the most Lu before Lin Yuan smiled and said: "Okay, I'll figure it out!" ”

Xiao Dezhang almost fell off the chair when he heard Lin Yuan's words, don't mention the regret in his heart! Lu Fang hurriedly walked up to Xiao Dezhang and said: "Adults don't need to panic, there is a way to work slowly and carefully, Lin Yuan calculates so fast, he must not be accurate enough, he will definitely lose!" ”

Xiao Dezhang had no choice but to believe Lu Fang, and then he heard Lin Yuan ask, "Haven't you finished counting yet?" ”

Lu Fang walked up to his subordinates and asked, "How many minutes will it take?" ”

The subordinate said, "At least ten minutes!" ”

Lu Fang said angrily: "Can't you hurry up?" ”

The subordinate said: "My lord, we can't be faster, we have only approximated the arc into three squares now, if it is faster, it will not be accurate!" ”

Lu Fang was very anxious, but at this time, he heard Lin Yuan say, "Why don't we take out the sand first and see how big it is?" ”

Lu Fang said: "The wooden strip can't be deformed, we can't get that arc of yours out!" ”

Lin Yuan smiled: "Don't worry, I've already thought of a way!" ”