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Chapter 34

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    Bai Lu did not ask whether Xu Hui cried.

    She didn¡¯t need to ask. On a summer night like this, there was nothing more sensitive than the sound of sobs.

    Xu Hui talked to himself on the phone for a long time, and finally regained his composure, breathing steadily, one after another.

    "Asleep?" Bai Lu asked.

    Of course he didn't answer.

    "Xu Hui, are you sleepy?" Bai Lu glanced at the clock on the table. It was already past twelve o'clock.

    "It's a waste of phone calls." Bai Lu said, and cut off the call.

    Going to bed after twelve o'clock is too common for high school students. On Sunday morning, Bai Lu got up at 6:30, went to the bathroom, took a shower, and went to school refreshed.

    Wu Hanwen arrived earlier than Bai Lu today, but he was not studying, but drinking from a bottle of milk.  "The hair comes out before it's dry, and the scar is healed and the pain is forgotten."

    Bai Lu sat down and took out the book. Wu Hanwen asked again: "Going home this afternoon?"

    "Yeah." She glanced at Wu Hanwen, "Are you free now?"

    Wu Hanwen brought the milk carton in front of him and said to Bai Lu, "Ask it."

    Bai Lu turned around, and Wu Hanwen immediately said, "Okay, okay, I'm just kidding, I'm free."

    Bai Lu took out a book of exercises, opened a page and showed it to Wu Hanwen.

    "How to do this?"

    "Tsk, tsk." Wu Hanwen said as he took the question over, "What did Teacher Bao say? You must have a good attitude when asking questions, otherwise the person who solves the problem will not be smart."

    Bai Lu folded her hands and put them on the table. She turned her body slightly to face the test book. She looked cute and quiet.

    Wu Hanwen was half joking. Seeing Bai Lu's appearance, he suddenly became honest. He adjusted his glasses and looked at the test paper.

    "Oh, can't you deduce this formula?" Wu Hanwen turned on the academic master mode and took a pen to write in the notebook. In a short time, he wrote down all the main steps to solve the problem.

    Bai Lu looked at the test paper, and Wu Hanwen looked at her.

    She looked focused, and the morning light outside the window shone on Bai Lu's hair, like a layer of light gold powder.

    Wu Hanwen rubbed his neck, coughed twice, and then said: "Actually, there are some simple general solutions to this problem of summing and scaling a sequence to be smaller than a certain constant, but they may not be applicable to all types."

    Bai Lu looked over and Wu Hanwen turned away his eyes.

    "Um let me write down the formula for you." Wu Hanwen wrote down a few lines of the formula and said, "This formula is currently applicable to sequences without radicals. Those with radicals are more troublesome."

    Bai Lu took the pen and wrote calculations on the scratch paper. After a while, she looked up, her eyes brightening.

    ¡°Really, it¡¯s amazing.¡±

    Wu Hanwen¡¯s neck suddenly felt hot.

    "Thisthisthis is called a series inequality. There are many scaling methods for proving series inequalities, such as the analytical general term method, the geometric scaling method, the split term scaling method, the integral scaling method, and the tangent scaling method.  Contraction method, binomial expansion method"

    A fat man passed by. Li Siyi looked sideways at Wu Hanwen, walked to the back row, and sighed quietly.

    When Wu Hanwen heard it, he gritted his teeth and closed his mouth.

    Bai Lu couldn't understand what he was talking about. Her attention was focused on the formula she had just summarized.

    Students came to school one after another, and the short morning self-study class began on Sunday.

    Bai Lu read last night's questions again, turned to look at Wu Hanwen, and said sincerely: "Thank you."

    Li Siyi behind him cheered, "Why are you thanking me? Who doesn't know that our school committee¡ª¡ª"

    Wu Hanwen turned around and glared, and Li Siyi continued calmly: "Who doesn't know that our school committee is selfless and likes to help our classmates the most."

    Bai Lu said: "When will you compete?"

    Wu Hanwen: "After the first and second grade of high school, it's September 7th."

    Bai Lu was quiet, "September 7th?"

    ¡°It will be there soon.¡±

    Bai Lu looked at the calendar card hanging at the front and said softly, "Yes, it will be soon." (Remember the website address: www.hlnovel.com
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