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#42701 Jokes » Mnemonics » 2005-07-22 22:17:32
- Jai Ganesh
- Replies: 14
To
express
e
remember
to
memorize
a
sentence
to
simplify
this.
Can you think of mnemonics for pi?
#42702 Re: Introductions » hi » 2005-07-22 22:12:29
Oh I am tired of this......................
TRUCE..............at 140 Decibels.....:)
#42703 Re: Dark Discussions at Cafe Infinity » Be aware of my absence » 2005-07-22 22:08:45
We would be missing you all......
Do join us at the earliest........ 
#42704 Re: Maths Teaching Resources » Maths-Whizz - Brilliant resource » 2005-07-22 22:06:40
mathematics is for all of us,
the poorer are always trhe better,
my Guru is Niels Henrik Abel, born in Norway
#42705 Re: Maths Teaching Resources » is maths hard? » 2005-07-22 22:04:03
MaTHEMATICS IS THE HIGHEST DEGREE OF LOGIC
AND IF YOU THINK RIGHT, MATHEMATICS IS WITH YOU
#42706 Re: Help Me ! » Im beginning to think this is impossible.... » 2005-07-22 21:58:25
My head is reeling 
#42707 Re: Jai Ganesh's Puzzles » Problems and Solutions » 2005-07-22 21:55:17
I just remembered a question asked to me when I participated in a quiz when I was 14 :
A three digit number is written on a window glass,
the difference between the number and as it can be seen from the other side is 693,
what's the number?
#42708 Re: Help Me ! » Algebra problem » 2005-07-22 17:59:20
Algebra is using of variables like x,y,z etc to solve mathematical problems.
For example, if you have this problem
#1
When 53 is added to a number, you get 70. What is the number?
The solution would start this way.
Let x be the number.
Therefore, 53 + x = 70
x = 70 - 53 = 17
#2
25 added to the double of a number is 95. What is the number?
Solution:-
Let x be the number.
Therefore, 25 + 2x = 95
2x = 95 - 25 = 70
x = 70/2 = 35 
#42709 Re: Guestbook » Pythons » 2005-07-22 17:48:19
T R U C E !!!!!!!!!!!!!!!!
#42710 Re: Help Me ! » equations, equations... » 2005-07-22 16:55:44
(three unknown x,y,z with three equations, always solvable right!? But i only want to solve this for x!!!)
There are actually six variables...x,y,z,a,b,c
#42711 Re: Help Me ! » Square root of 0 » 2005-07-22 16:46:51
Hi Helen,
I don't know what you mean by pie questions and pie formula.
If you mean pi, I shall explain to you.
Pi is a Greek alphabet used to represent the ratio of the circumference of a circle to its diameter, which is always a constant.
Pi is taken as 3.14 or 22/7, as an approximation,
but the actual value of pi is
3.14159265358979323846264338327950288.......it goes on and on.
The area of a circle of radius 'r' is
pi*r² and its circumference is 2*pi*r
Similarly, the volume of a sphere of radius'r' is
4/3*pi*r³ and its area is 4*pi*r² .
Pi is also an angle of 180 degrees.
Therefore, pi/2 would be 90 degrees and pi/4 45 degrees.
If you have any specific doubt, you can post in this forum.
#42712 Re: Maths Is Fun - Suggestions and Comments » Math Is Fun » 2005-07-22 00:06:16
Yes, sometimes the better team loses 
#42713 Re: Guestbook » maths » 2005-07-21 23:33:10
Yup - maths is fun, expecially on this website
Great! That's a big compliment, Thank you
#42714 Re: Help Me ! » Square root of 0 » 2005-07-21 23:28:10
e^(i*pi)=1
Of the five numbers considered important in mathematics, this number relates four.
I think this equation was given by Loenard Euler.
This, I think, is a result of
e^(i*theta) = cos (theta) + i sin(theta)
and
Abraham de Moivre's theorem, according to which
(Cos(theta)+i*sin(theta))^n = cos n(theta) + i*sin n(theta)
which can be written as
e^(n*i*theta) = Cos n(theta) + i*sin n(theta)
#42715 Re: Jai Ganesh's Puzzles » Problems and Solutions » 2005-07-21 22:07:33
Thank you, Admin, for the neat graph.
#42716 Re: Jai Ganesh's Puzzles » Problems and Solutions » 2005-07-21 20:52:37
Cos(Sin A) is always greater than Sin (Cos A),
as rightly pointed out by Mathsy!
We shall test this for three values in the first quadrant, in degrees.
First, 0.01°.
Cos (Sin A) > Sin(CosA).
Next, for 45°
Again, Cos (Sin A) > Sin(CosA).
Finally, for 89.9°
Yet again, we get the same result.
I shall try to search for a proof, or prove it myself!
#42717 Re: Dark Discussions at Cafe Infinity » Terrorist Attack in London » 2005-07-21 20:41:00
Thank God, they were not successful!
#42718 Re: Dark Discussions at Cafe Infinity » Be aware of my absence » 2005-07-21 16:38:32
We would be missing you two!
Bon Voyage!
#42719 Re: Jai Ganesh's Puzzles » Problems and Solutions » 2005-07-21 16:35:07
Which is greater?
Cos (Sin A) or Sin (Cos A)?
#42720 Re: Jokes » grand jokes » 2005-07-21 16:33:40
....and I heard the refrigerator was a washing machine! 
#42721 Re: Help Me ! » Square root of 0 » 2005-07-21 16:23:52
Hi, I love pi! Welcome to the forum!
Trying to find the square root of 0 using logarithms is not possible
as log 0 is not defnined. This is because any number raised to any number cannot be 0. That includes 0.
The square root, cube root, fourth root etc, of 0 IS 0.
This is because
0² = 0
0³ = 0
0^4 = 0 and so on.
Any nth root of 0 is 0, the only condition being n ≠ 0.
This follows from the fact that
if a^b = c, then bth root of c = a.
The birth of imaginary numbers is, indeed, interesting.
I had read somewhere that imaginary numbers have practical applications too!
#42722 Re: Help Me ! » Difficult question » 2005-07-20 21:21:03
There's a better one! Truly universally acceptable, but not being put into use anywhere (I think! 
)
1,0000 = Myriad
1,0000,0000 = Myllion
1,0000,0000,0000 = Byllion etc.
#42723 Re: Help Me ! » Algebra problem » 2005-07-20 21:17:54
My favourite is the one with the square made up of a slightly smaller square and 4 right-angled triangles.
And thats the only one I remember!
#42724 Re: Puzzles and Games » The bad coin » 2005-07-20 19:40:33
1/2
Because there's nothing special about Bill's coin!
Because the probability of getting (head, head and head),
(head, tail, and head) are the same, that is 1/8 !
#42725 Re: This is Cool » Do you think you can? » 2005-07-20 19:32:24
I would be wasting close to 33 years of my life if i did (the American Billion), assuming I don't sleep!