Math Problems!........share It Here!

[mc_darklight]

ano yung long formula ng square root?

[mc_darklight]

formula for sudoku puzzle

[mason_rod]

The Fibonacci numbers:

 

0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, and so on....

[dix]

Drake Equation

Is there a way to estimate the number of technologically advanced civilizations that might exist in our Galaxy? While working at the National Radio Astronomy Observatory in Green Bank, West Virginia, Dr. Frank Drake conceived a means to mathematically estimate the number of worlds that might harbor beings with technology sufficient to communicate across the vast gulfs of interstellar space. The Drake Equation, as it came to be known, was formulated in 1961 and is generally accepted by the scientific community.

N = R* fp ne fl fi fc L

 

where,

 

N = The number of communicative civilizations

R* = The rate of formation of suitable stars (stars such as our Sun)

fp = The fraction of those stars with planets. (Current evidence indicates that planetary systems may be common for stars like the Sun.)

ne = The number of Earth-like worlds per planetary system

fl = The fraction of those Earth-like planets where life actually develops

fi = The fraction of life sites where intelligence develops

fc = The fraction of communicative planets (those on which electromagnetic communications technology develops)

L = The "lifetime" of communicating civilizations

 

Frank Drake's own current solution to the Drake Equation estimates 10,000 communicative civilizations in the Milky Way. Dr. Drake, who serves on the SETI League's advisory board, has personally endorsed SETI's planned all-sky survey.

 

 

I remember this was featured in Carl Sagan's COSMOS tv series. Nice one .

[mt16]

1/2 of joke = true

 

1/2 of joke = true biggrin.gif

[cute_morena]

Drug Calculation D/S x Q

 

D= desired dose

S= stock

Q= quantity

[cryptkpr]

P = i^2 R

 

P = power

i = current

R = resistance

[iamthebest747]

Wow, saya ng thread na to a. For Math majors and math lovers.

 

Ako personally, as a math major, mahal ko talaga math. Saya ng Kakuro at Sudoku puzzles e.

 

Eto na lang, share ko sa inyo, nakakatawang proof na 1=2.

 

Assume a = b

Then a(a - b ) = b(a - b )

a^2 - ab = b(a - b )

a^2 - b^2 = b(a - b )

(a - b )(a + b ) = b(a - b )

(a + b ) = b

2b = b

2 = 1

 

Luma na yan e. Nakakatawa lang isipin. Hahahaha. Try nyong hanapin yung mali kung nasaan.

Edited January 3, 2007 by iamthebest747

[libraprime]

Haha.. Reminiscing time nato nung engineering days ah.. Tama yung solution nyan eh.. ang problema daw yung given.. Ilang UP profs na pinagtanungan ko rin nyan di nila maexplain kasi tama lahat ng steps..

 

Eto isang lumang problem din.. kakatuwa.. specially dedicated sa nag-open ng thread na ito.. sana masagot mo.. )

 

Show 45 - 45 = 45

[ibirp]

Wow, saya ng thread na to a. For Math majors and math lovers.

 

Ako personally, as a math major, mahal ko talaga math. Saya ng Kakuro at Sudoku puzzles e.

 

Eto na lang, share ko sa inyo, nakakatawang proof na 1=2.

 

Assume a = b

Then a(a - b ) = b(a - b )

a^2 - ab = b(a - b )

a^2 - b^2 = b(a - b )

(a - b )(a + b ) = b(a - b )

(a + b ) = b

2b = b

2 = 1

 

Luma na yan e. Nakakatawa lang isipin. Hahahaha. Try nyong hanapin yung mali kung nasaan.

 

 

 

ang mali nyan: sa

 

(a - b )(a + b ) = b(a - b )

 

kasi, a = b , then: (a - b )= 0. so dapat dun plang, zero na ang equation mo..

Edited January 6, 2007 by ibirp

[Alien1]

If 1/1 = 1

and 1/0 = undefined/infinity

what does 0/0 = ?

1 or undefined/infinity

[libraprime]

anything divided by 0 is infinity po

[naru2ako]

sa aken piece of cake!!!

[Alien1]

No

0/0=0

 

[blackdeacon]

Ito probability problem.

 

There are 1000 items in a room, 2 of which are broken.

 

A person is asked to get 22 items from the room at random.

 

What is the probability that he'll get the two defective items?