cwrw238
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Questions Asked

cwrw238:
This is not a question its just a note on something I read about ancient Egyptian fractions. The Egyptians of the second millennium BC bas…
 updated 27 days ago
 1 reply
 2 Medals
Mathematics

cwrw238:
have you guys got the same problem as me? I cant get into anyone's post!! I just get the ads  everything below is blank!!
 updated one month ago
 No Medals Yet
Mathematics

cwrw238:
whats wrong with the draw facility? Not responding
 updated 2 months ago
 7 replies
 4 Medals
Mathematics

cwrw238:
Are the drugs paracetamol and acetaminophen the same chemicals?
 updated 4 months ago
 5 replies
 1 Medal
Mathematics

cwrw238:
Anyone know what a 'squarey' number is?
 updated 5 months ago
 7 replies
 2 Medals
Mathematics

cwrw238:
Aren't we allowed to make interesting comments on a subject any more? I made one in the question box in the Mathematics section which got de…
 updated 6 months ago
 8 replies
 1 Medal
Mathematics

cwrw238:
This is not a question its just about something I read recently regarding repeated prime factors. The probability of a nonprime number hav…
 updated 6 months ago
 2 replies
 No Medals Yet
Mathematics

cwrw238:
Why has English become so widely spoken? I s it because of it's an easy language to learn, or because Britain had so many colonies or is th…
 updated 7 months ago
 1 reply
 No Medals Yet
Mathematics

cwrw238:
Next term we start linear algebra. Some students tell me it's difficult. i'd appreciate some opinions on this.
 updated 8 months ago
 13 replies
 1 Medal
Mathematics

cwrw238:
Who invented the '=' sign?
 updated 9 months ago
 6 replies
 2 Medals
Mathematics

cwrw238:
I'm not sure how to solve this equation
y' (2x  2y  4) = 2x + 7y + 5
 updated 10 months ago
 15 replies
 2 Medals
Mathematics

cwrw238:
Not sure if this is a math question . I guess its more of a catch question and is very amusing.
Rearrange the letters of NEW DOOR to give…
 updated 10 months ago
 44 replies
 7 Medals
Mathematics

cwrw238:
What's the next number in this series:
0, 1 , 5, 23, 119, _
 updated 10 months ago
 30 replies
 4 Medals
Mathematics

cwrw238:
Any ideas how to do this vector problem that a friend asked me about.
The vertices A,B and C of a triangle have noncoplanar position…
 updated 11 months ago
 26 replies
 2 Medals
Mathematics

cwrw238:
How many zeros are there at the end of 100! Generalize your reasoning to find number of zeros at the end of 1000!, 10,000! and 97!
…
 updated one year ago
 5 replies
 No Medals Yet
Mathematics

cwrw238:
I assume you use conservation of energy to solve this problem:
 updated one year ago
 5 replies
 1 Medal
Mathematics

cwrw238:
Whats the integrating factor for the following FODE  I've worked it out but im not sure if its right.
(x+1)f'  xy = x
 updated one year ago
 20 replies
 1 Medal
Mathematics

cwrw238:
I'm having trouble solving this differential equation
(1  x^2) y'  xy = x
…
 updated one year ago
 30 replies
 4 Medals
Mathematics

cwrw238:
what is the only mammal other than man whose body does not produce its own Vitamin C?
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

cwrw238:
Just for fun What is the only number whose name in English is in strict alphabetical order
 updated 10 months ago
 3 replies
 9 Medals
Mathematics

cwrw238:
I seem to have a mental block with this problem  can someone help please.
If x = sin t and y = cos 2t find dy/dx in terms of x and prove…
 updated one year ago
 8 replies
 1 Medal
Mathematics

cwrw238:
Has anybody read marcus de sautoy's book 'the music of the primes' which is basically about prime numbers and the Riemann Hypothesis? There…
 updated one year ago
 4 replies
 No Medals Yet
Mathematics

cwrw238:
Find the radius of the enclosed circle. Sides PR and QS are both 25 cms long . All sides of the trapezium are tangents to the circle and ar…
 updated one year ago
 4 replies
 2 Medals
Mathematics

cwrw238:
Question from uk math challenge:
How many distinct pairs (x,y) of real numbers satisfy the equation (x + y)^2 = (x + 4)(x  4)
…
 updated one year ago
 7 replies
 2 Medals
Mathematics

cwrw238:
Which celtic languages are still spoken?
 updated one year ago
 3 replies
 1 Medal
Mathematics

cwrw238:
Plz confirm this
if f(x) = x^2  19 with domain (INF, 0)
g(x) = 1  0.5x with domain (6, INF)
…
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

cwrw238:
I'm helping my nephew with a function question and i'm stuck on one part  I should know this really.
f(x) = x^2  19, domain = (INF, …
 updated one year ago
 13 replies
 No Medals Yet
Mathematics

cwrw238:
Find f' in terms of g' if
f(x) = g(x + g(a)).
 updated one year ago
 11 replies
 4 Medals
Mathematics

cwrw238:
how about this one
101, 12, 11, 10, ....
 updated one year ago
 18 replies
 7 Medals
Mathematics

cwrw238:
my drawing board is messed up to  it doesn't write what i intend it to write!
 updated one year ago
 27 replies
 2 Medals
Mathematics
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