Chapter 5

Imagine that the picture of soaring bully value did not appear. Instead, Qin Luo saw a flower and several big Chinese characters appeared in front of Qin Luo.

"The book is too valuable for the host to read at this time."

“……” If you can, qinluo would like to find a crack in the ground.

However, Qin Luo can only give up solving the world's problems and go to the next "trigonometric function expansion and analysis".

"Is this boy really turning?" Watching Qin Luo put down "Goldbach conjecture" and turn to the next "trigonometric function", Li Wei murmured to himself.

After more than 20 years of practice, he has not seen the prodigal son turn back, but this is the first time Li Wei has seen such a prodigal son turning back like Qin Luo.

"I'll see how long you can hold it."

Li Wei didn't leave in a hurry. Instead, he just stood there and looked at Qin Luo.

Five minutes, ten minutes, half an hour

Qin Luo still did not put down the meaning of the book.

He seemed to be immersed in it.

Li Wei was stunned.

"Xueba value + 1"

"Xueba value + 1"

for Li Wei's arrival, Qin Luogen didn't know that he was looking at his increasing Xueba value. It was like chewing xuanmai and could not stop.

At this moment, Qin Luo felt that his thin body was gradually becoming stronger, and his empty spirit was being supplemented. The beautiful tomorrow is beckoning to myself.

"Cough, classmate, how to do this problem?" When Qin Luo was immersed in the sea of learning, a beautiful girl pulled him back to reality.

Looking back, I saw a beautiful looking sister with a draft paper came over.

"Tell me about that question." Qin Luo responded generously.

As an honest Xueba, Qin Luo felt it necessary to help Xueba.

"Thank you." Meng sister whispered a word of thanks, and then handed the textbook to Qin Luo.

Trigonometric function?

The curve ycosx + 2y-1 = 0, first move 2 / π units to the right along the X axis, and then move down 1 unit along the Y axis. The equation of the curve is:

just looked at the trigonometric function just now, let's try our strength.

Taking the pen and paper in Meng's hand, Qin Luo began to calculate quickly.

The finishing formula: y = 1 / 2 + cos (x - π / 2) - 1, because it is necessary to turn the original curve to the right and down by 2 / π and 1 unit, the formula can be directly converted into: (y + 1) cos (x - π / 2) + (y + 1) - 1 = 0.

In just two minutes, Qin Luo wrote the answer: "it's solved."

"What? Solved? So fast? " Lin Shanshan looked at Qin Luo in disbelief. He thought about this question for a long time, but he could not solve it. But when he got to Qin Luo's hand, he solved it in only two or three minutes?

"See for yourself."

Lin Shanshan was suspicious. He recalculated the question carefully according to Qin Luo's steps.

“…… That's the answer! "

For a moment, Lin Shanshan was a little stunned.

"The host's massive knowledge success shocked others and won 10 Xueba points." The prompt tone of the system rang timely.

Qin Luo's learning hegemony value has increased by 10 points.

Meizizi ~

"by the way, you have just entered high school. What class are you in Qin Luo asked curiously.

Lin Shanshan's face turned red, and her pretty face turned red and said, "I'm a junior in high school..."

"Work hard, and you will become the same Xueba as me in the future." Qin Luo looked at her seriously and said with encouragement.