The love of functions and derivatives

Until the functional hospital sat outside the door of the emergency room, it remained in a state of sluggishness.The doctors in the hospital were helpless when they saw the situation of the derivative. They used drugs and other means to maintain the life of the derivative and at the same time had to contact the staff of the textbook writing team to participate in the rescue. With a sound, the function looked at the time displayed on the phone screen, put the phone back into its trouser pocket, closed its eyes and thought for the Nth time——

Why is it not ten o'clock yet?

The function spent three hours looking at the mobile phone every 5 minutes before finally waiting for the textbook writing team to arrive late.

Function watched the staff of the teaching material writing team enter the rescue room. Function stared at the door of the rescue room for a long time, and the door finally opened again. The staff of the writing team breathed a sigh of relief, and said to Function: "The derivative is no longer in danger. "

The writing team and the hospital doctor walked side by side, and the writing team said: "If this ink is not old ink, I'm afraid I have to go home with other members of our team to catch up on the manuscript of the chapter on derivatives. .”

Function closed his eyes and smiled.

A month later.

"The way of heaven is reincarnation, who is bypassed by the sky. I fed me porridge at the beginning, but now I want to feed it." Function sighed, while sending the spoon filled with porridge to the mouth of the derivative. Take out on order.

After He Jie left, the college entrance examination tester and the textbook writing team revised the conditions for entering the high school mathematics textbook world again. I want to say a word. It turns out that this sentence is "I want to change the world of mathematics". The person who proposed the college entrance examination thought about it for a long time. The mechanism of falling into the textbook world is triggered, I am very confident!"

The derivative of the function cast an unbelievable look, with a dubious look, the function was the first to ask: "What did you change?"

"Ahem." The college entrance examination questioner raised the corner of his mouth, "I changed it to 'I love mathematics'."

Derivatives of functions: ... Now I believe that no students will enter the world of high school mathematics textbooks.

Derivative enjoys eating the porridge fed by the function, and looks comfortable. The injury has almost healed after a month. The function obviously observed this, and then put the empty lunch box aside: "Here, can you Can you explain who Jun He is?"

Derivative cleared his throat, and was about to speak when suddenly his body twitched, showing a bit of pain.

Function hurriedly said: "What's wrong with you? What's wrong with you? I'll call a doctor for you!" Function scolded those quack doctors who said they could be discharged today, and got up from the stool to find a doctor. Leaving the bench, he was held by Derivative——

"I'm fine..." Derivative's breath was a little weak, "It's just that my chest hurts..."

"It's nothing serious?!" Function was about to leave immediately, but found that his hands were tightly held by Derivative, and he couldn't break free. Derivative took Function's hand and pulled Function to him, shaking his head and said, " No problem..."

"It's okay...don't bother the doctor..." Derivative said angrily, "As long as you give me the tie, the pain here will be gone..."

function:……