Why doesnt anyone answer this question

The question at

http://answers.yahoo.com/question/index;_ylt=AuGVTTG3YlcCqv.iX2gZWnnsy6IX;_ylv=3?qid=20120510061114AAyuMZJ

Ive asked several times but got no answer.

Thank you.

Perhaps because, as the person who answered in that link suggested, "sen(x)" isn't standard mathematical notation. Did you mean "sin(x)?" Make sure to proofread your questions before posting them if you want to maximize the number of answers you get. This is an issue again at the end of the question you linked to; what does "Why or what not" mean? Did you mean "why or why not?" Also, the question you asked is relatively difficult. There aren't very many people on this site who are going to be able to help you with that kind of question, with or without typos in it. That's not to say that no one will answer, but expect fewer answers than if you were asking a more basic question.

I just answered it for you. Check your original question.

Because dafuq am I reading.

Go to Google. Look up AllExperts. Find someone who knows math and ask your question.

hmm, IDK maybe because most people will look at it ,
AND THINK WTF :D
JS,

Because it's in Chinese D: