Chapter 5： Work hard, you can also become a master (2/2)

As an upright student master, Qin Luo felt it necessary to help the student scum.

”Thank you.” Sister Meng whispered thank you, and then handed the textbook in her hand to Qin Luo.

Trigonometric function?

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

Just saw the trigonometric function just now, so let's try your strength.

After taking the pen and paper from Meng Sister's hand, Qin Luo began to calculate quickly.

Arrange the formula: Y=1/2+cos(x-π/2)-1, because the original curve is to the right and down by 2/π and 1 unit respectively, so the formula can be directly transformed into : (Y+1)cos(x-π/2)+(y+1)-1=0.

In just two minutes, Qin Luo wrote the answer: ”It's solved.”

”What? It was solved? So fast?” Lin Shanshan looked at Qin Luo in disbelief. After thinking about this question for a long time, he couldn't solve it, but in Qin Luo's hands, it was solved in just two or three minutes?

”See it for yourself.”

Lin Shanshan was skeptical, and he carefully recalculated the question based on Qin Luo's steps.

”...This is really the answer!”

Lin Shanshan was a little stunned for a while.

”The success of the host's massive amount of knowledge caused others to be shocked, and he earned 10 points for Xueba points.” The system prompt sounded timely.

Qin Luo's academic hegemony value increased by 10 points.

Beautiful~

”By the way, classmate, you just entered high school, which class are you in?” Qin Luo asked curiously.

Lin Shanshan flushed all of a sudden, and said with a blushing face: ”I'm in the third year of high school...”

”Go hard, you will become a high school tyrant like me in the future.” Qin Luo looked at her seriously and said with encouragement.