Fast time travel, I became the big villain

Chapter 86
Song Nan comforted the angry Song Beizheng with his eyes.

After all, this is outside, and the second brother is still the high-cold actor of Gaolingzhihua, so he can't collapse just because of a trivial matter.

The person who solved the problem was the director’s nephew, Xi Xing, who was studying for a Ph. Come up with this question.

Xi Xing stayed at home, so he directly applied to join in the fun with the director, to see what those glamorous stars are like in private.

When he heard that there was a problem with his answer, Xi Xing was about to explode with anger!

How dare an actor in the entertainment industry doubt him, a talented student? ! ! !

Does the egg hit a rock? !
Xi Xing wanted to laugh a little, laughing that the celebrity would use whatever means to go out, so he might overturn when meeting him this time.

But Xi Xing didn't show it on his face, after all, it was his uncle's crew, so he still had to give his uncle some face.

Xi Xing walked up to the group of people, and looked at them from above.

He said lukewarmly: "Who said there is something wrong with my answer? I wrote the answer, so just tell me!"

Of course, when he said these words, Xi Xing did not look at Song Nan.

He felt that Song Nan was a soft little girl, how could she be like those stars in the entertainment industry?
Looking at the little girl's white, tender, and pure appearance, how could she look like a star who does not use any means to climb up?
The little girl knew at a glance that she was tricked by her uncle to support her popularity.

So Xi Xing naturally ignored the little girl.

But what Ling Xixing didn't expect was that when he asked again who was questioning his answer, Song Nan stood up.

Xi Xing's eyes widened: "Sister, don't talk, are you the one who has doubts about my answer?"

Song Nan nodded firmly, looked at Xi Xing, wondering why he asked such a question.

Seeing such a soft little girl, Xi Xing couldn't bear to treat the little girl like other people.

He knew that his answer was correct, but if it got out, the little girl would definitely be hit by those crazy people on the Internet.

Looking at such an innocent little girl, he really couldn't bear to let the little girl suffer like that.

He persuaded the little girl with good intentions: "You probably don't know, I'm a doctoral student at Yenching University..."

The implication is that my answer will not be wrong...

But she seemed to be unable to understand, staring stubbornly at Xi Xing's eyes: "Thank you, I know."

Xi Xing was a little annoyed, feeling that his good intentions had been abandoned by others.

In a fit of anger, Xi Xing no longer cared about Song Nan, and let her fend for herself.

"Then tell me, where did I go wrong!" Xi Xing said in a stern voice.

Song Nan didn't care about Yi Xixing's change of attitude, and pointed to a part of the topic in a soft voice: "Look, are you using the Leibniz formula here? If you look carefully, you will find On the surface, he can use Leibniz's formula, but Leibniz's formula has a small limitation. Under that limitation, using Leibniz's formula is wrong, but it will also give an answer... See if you can use Lagrange's law to calculate another answer here...

Although Lagrange's law is more troublesome, it does not have too many limitations, and it is possible to use it in this question! "

Xi Xing looked down on Song Nan's analysis at first, but when he listened to it, his face became serious: it seems, is it because of this limitation?

(I'm talking nonsense, don't take it seriously!!! I don't know whether Leibniz's formula has limitations...)
(End of this chapter)