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All the conceptual questions, pure math & basic stats alike I am good at answering your algebra (including logarithm, functions, trigonometry) and geometry questions. I can also provide to you a firm understanding into basic calculus and other mathematical ideas and concepts. You can either ask questions in English or Chinese. Physics Qns that require rigorous math are also welcomed Important:Please avoid asking me questions related to economics.After all, I am only a secondary school student

A lot of participation in Math Olympiad Competition with numerous awards (Not always gold, though) CMO Gold, SMO Silver, SPhO Gold

So far, nothing.

Exactness..No exceptions in its definition..Intricate but intriguing solutions to problems

Anything related to my future ambitions..

Eh..

Even math has assumptions

User | Date | K | C | P | Comments |
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Donna | 02/24/11 | 10 | 10 | 10 | Thanks Chen, I went through all possibilites ..... |

Kenneth | 02/22/11 | 10 | 10 | 10 | Thanks for the reply! |

Kenneth | 02/16/11 | 10 | 10 | 10 | Thanks for your reply! |

Oliver | 01/27/11 | 10 | 10 | 10 | Thanks so much Chen. This one was ..... |

Oliver | 01/25/11 | 10 | 10 | 10 | Awesome! Thank you so much Chen - ..... |

http://www.wolframalpha.com/input/?i=inflexion+point+x%5E4-72x%5E2-17 To get inflexion point, differentiate your function twice and check when it is zero becos: first derivative shows whether it's

The question asking for a slope, which is supposed to be dy/dx (and not dx/dy) (in fact it is arbitrary to take x as independent variable and y the dependent, for example y = 2x + 1 can be rewritten

Firstly, you get the arc length corresponding to the sector cut out: R(theta) It's the circumference of the cone's base: so 2(pi)r=R(theta), r = R(theta)/2(pi), where r is the radius of the cone's base

I wonder who gave you this question. It is clearly not solvable to me. If you treat the two variables' relation as a function (shown as a curve in your axis), the PODR is at the point where dy/dx is

I don't quite understand your question. If either y or z is replaced by a number, then there will be only one unknown (variable), and the equation will be solvable, and most likely has a single unique

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