I'm quite overwhelmed by your results... Congratulations! Some of you should be proud of yourselves, others should take care of those silly mistakes you sometimes can't avoid making and, finally, there are people whose main problem is the lack of effort and attention in class... Anyway, it's never too late to improve your qualifications!

AB01 | 8,1 | BC01 | 8,5 | |

AB02 | 6,7 | BC02 | 4,5 | |

AB03 | 9,1 | BC03 | 6,4 | |

AB04 | 7,8 | BC04 | 9,6 | |

AB05 | 9,1 | BC05 | 9,3 | |

AB06 | 8,9 | BC06 | 9,2 | |

AB08 | 7 | BC07 | 8,4 | |

AB09 | 6,9 | BC08 | 8,3 | |

AB11 | 2,5 | BC09 | 10 | |

AB13 | 8,3 | BC10 | 8,9 | |

AB14 | 9,7 | BC11 | 7,8 | |

AB15 | 6,7 | BC12 | 5,9 | |

AB16 | 9,5 | BC13 | 7,8 | |

AB18 | 7,7 | BC14 | 9,8 | |

AB19 | 9,6 | BC15 | 9,5 | |

AB20 | 7,6 | BC16 | 8,9 | |

AB22 | 8,3 | BC17 | 5,3 | |

AB23 | 9,6 | BC18 | 8,1 | |

AD07 | 8,9 | BC19 | 5,3 | |

AD10 | 9,4 | BC20 | 7,5 | |

AD12 | 6,1 | BC21 | 6,9 | |

AD17 | 6,5 | BC22 | 10 | |

AD21 | 7,4 | BC23 | 6,8 | |

BC24 | 8 |

**Challenge 2: An almost infinite Addition**

*First of all, congratulations to Laia, Iván, María G., Verónica, Tania, Andrea I., Carlos, Jorge and Xabier. You have given one of the multiple right answers ^_^ Therefore, you have won a Challenge's Possitive.*

**Mathematics is a science where not only additions and subtractions are featured… There are so many different fields in mathematics that they are almost endless (**

*analysis, geometry, algebra, statistics, topology, games theory…*) and, sometimes, the problems we have to face consist on proving some result we think it’s bound to be true (

*they are usually called*).

**theorems**These demonstrations are usually tough and long, that’s why they involve huge quantities of time, effort and study so we don’t become nuts with things like….

Your time has come to prove something!!

a)
Prove that $0,\widehat{6}+0,\widehat{3}=1$

b) Try to get the
result of the following product of fractions without multiplying all of them
(which would take ages…):

$$\left(1-\frac{1}{2}\right) \cdot \left( 1-\frac{1}{3} \right) \cdot \left( 1- \frac{1}{4} \right) \cdot \left( 1 - \frac{1}{5} \right) \cdots \left( 1 - \frac{1}{999} \right) \cdot \left( 1 - \frac{1}{1000} \right)$$

$$\left(1-\frac{1}{2}\right) \cdot \left( 1-\frac{1}{3} \right) \cdot \left( 1- \frac{1}{4} \right) \cdot \left( 1 - \frac{1}{5} \right) \cdots \left( 1 - \frac{1}{999} \right) \cdot \left( 1 - \frac{1}{1000} \right)$$

The guidelines are the following: this time you can either send me the answer to my gmail account (if you want, yo may do it with paper and pen and scan it) or bring it to class in a piece of paper. Only the 14 first answers will receive a positive mark. Deadline: October the 13th. Printable version HERE!!

In two weeks Keane will be playing alive in the Baluarte. I had the chance to attend one of their performances and they sounded really impressive ;)

*Keane - "Silenced by the Night"*
mario i can finally get in the blog hallelujah lets thank the lord for all he has given us etc. i love keane (like a true brit) and i will be seeing them perform in two weeks in baluarte!!!!!!!!!!!

ReplyDeleteHahaha!!! I'm elated to hear about that (both things :P). You'll definitely have an incredible time, you'll see ^_^ I will NOT be there because I've decided to go and see them in Madrid the weekend before, since the Baluarte Style (chairs for a concert?? C'mon!!!) doesn't appeal to me :P

DeleteI have just remembered I even have some music sheets from their first album... should I practise them abain?? XD

madrid!!!! that is amazing can you believe that i have been all the way to london and berlin but i have never been to madrid except for the train station???? although i like keane my favourite british band is take that i love them try and listen to one of their songs

Delete2006... it's not that old!! Well, maybe it is for you, but let me stress here that when they released Back for Good I was already 10 years old XDD

Deletehttp://www.youtube.com/watch?v=273eSvOwpKk

Mario... I HAVE SOLVE THE PROBLEM!! YEAH!! XD But, please, do the next problem easier

ReplyDeleteI have put this in the email but I repeat you, so please do it hahahaha

It is too easy the problem, do U think it is difficult?

DeleteI'm agree with Ivan:) Do it easier xD I have sent you the solution:)

ReplyDeleteI will bring you the answer tomorrow in a piece of paper! I think It's correct :)

ReplyDeleteit is too easy, I want more difficult problems!!!! I have done it in a minute, can I put some problems in the blog?

ReplyDeleteI have sent you the answer, and I agree with Xabi, it wasn't so difficult

ReplyDelete