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Questions Asked

experimentX:
Group Title
Note to all new users on this section. If you do not get any response on this section, try posting on this section. http://openstudy.com/stu…
 updated one year ago
 No Medals Yet
Mathematics

experimentX:
Group Title
Q
 updated one year ago
 46 replies
 2 Medals
Mathematics

experimentX:
Group Title
substitution:
…
 updated one year ago
 9 replies
 No Medals Yet
Mathematics

experimentX:
Group Title
What's this supposed to mean
We shall say that an ndigit number is pandigital if it makes use of all the digits 1 to n exactly once; for e…
 updated one year ago
 29 replies
 3 Medals
Mathematics

experimentX:
Group Title
Integration:
 updated one year ago
 51 replies
 2 Medals
Mathematics

experimentX:
Group Title
Can anyone explain this to me?
The fraction 49/98 is a curious fraction, as an inexperienced mathematician in attempting to simplify it m…
 updated one year ago
 30 replies
 4 Medals
Mathematics

experimentX:
Group Title
Prove:
\[ \Gamma(z)\Gamma(1z) = \frac{\pi}{\sin{(\pi z)}} \]
 updated one year ago
 12 replies
 2 Medals
Mathematics

experimentX:
Group Title
Find the last 10 digit's of \( 999^{999} \) ?
 updated one year ago
 23 replies
 2 Medals
Mathematics

experimentX:
Group Title
You have 25 liters of water in bucket A and 25 in bucket B. The difference in temperature difference is 40K between them. Now if you take on…
 updated one year ago
 20 replies
 3 Medals
Mathematics

experimentX:
Group Title
is Wolf crazy?
http://www.wolframalpha.com/input/?i=differentiate+abs%28x%29%2Fx+at+x%3D0
 updated one year ago
 6 replies
 1 Medal
Mathematics

experimentX:
Group Title
Books:
 updated one year ago
 No Medals Yet
Mathematics

experimentX:
Group Title
Just a similar Q.
Integrate with subs:
\[ 1. \int \sqrt{(xa)(xb)} \; dx\]…
 updated one year ago
 31 replies
 4 Medals
Mathematics

experimentX:
Group Title
find the shortest method to evaluate this
\[ \int \frac{\sin x}{\sin x + \cos x} \; dx\]
 updated one year ago
 28 replies
 3 Medals
Mathematics

experimentX:
Group Title
Three snails at the point of equilateral triangle start to move at each other. What is the shape of curve?
 updated one year ago
 85 replies
 4 Medals
Mathematics

experimentX:
Group Title
Find a shape of inclined plane(not necessarily plane) that takes shortest time to reach from top to bottom. Assume the ball is sliding witho…
 updated one year ago
 41 replies
 3 Medals
Mathematics

experimentX:
Group Title
Let \( a, b, c > 0 \), show that
\[ \sqrt{\frac{11a}{5a+6b}}+\sqrt{\frac{11b}{5b+6c}}+\sqrt{\frac{11c}{5c+6a}} \leq 3. \]
from http://math.s…
 updated one year ago
 14 replies
 2 Medals
Mathematics

experimentX:
Group Title
Does anyone know how to convert Maple output into Latex?
 updated one year ago
 8 replies
 No Medals Yet
Mathematics

experimentX:
Group Title
Evaluate:
\[ \displaystyle \int_0^{\infty} \dfrac{(\log x)^2}{x^2 + 1} dx \]
 updated one year ago
 31 replies
 1 Medal
Mathematics

experimentX:
Group Title
Evaluate:
\[ \huge \int_{\infty}^\infty {e^{ax} \over 1 + e^x} \; dx\]
…
 updated one year ago
 8 replies
 1 Medal
Mathematics

experimentX:
Group Title
Evaluate: given that b > a
\[ \int_0^\infty {x^{a1} \over 1 + x^b}\; dx\]
 updated one year ago
 5 replies
 No Medals Yet
Mathematics

experimentX:
Group Title
if \( a\) and \( b\) are two vectors in linear vector space, prove CauchySwartz inequality \( a.b \geq a.b\)
 updated one year ago
 7 replies
 2 Medals
Mathematics

experimentX:
Group Title
Show that the determinant and trace of Matrix remains invariant under similarity transformation
 updated one year ago
 4 replies
 1 Medal
Mathematics

experimentX:
Group Title
How to solve heat equation using Monge's method?
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

experimentX:
Group Title
A Question from my past paper:
Use Residue theorem to prove
\[ \int_0^\infty {\sin x \over x} = {\pi \over 2}\]
 updated one year ago
 18 replies
 2 Medals
Mathematics

experimentX:
Group Title
this is bugging me:
for any \( a, b, c, d > 0\) prove that
\[ {a^2 \over b} + {b^2 \over c} + {c^2 \over d} +{d^2 \over a} \geq a+ b+c+d \]…
 updated one year ago
 42 replies
 2 Medals
Mathematics

experimentX:
Group Title
Prove:
\[ \lim_{N\rightarrow\infty}\sum_{k=1}^N\left(\frac{k1}{N}\right)^N = {1 \over e  1}\]
 updated one year ago
 19 replies
 3 Medals
Mathematics

experimentX:
Group Title
solve:
\[ x\; {\partial z \over \partial x} + y\; {\partial z \over \partial y} = z \]
that passes though \( x^2+y^2+z^2=25 \) and \( x+y=1 …
 updated one year ago
 25 replies
 2 Medals
Mathematics

experimentX:
Group Title
Evaluate:
\[ \int_0^\infty\frac{1\cos x}{x^2(x^2+1)}\,dx \]
 updated one year ago
 59 replies
 5 Medals
Mathematics

experimentX:
Group Title
Anyone seen proof of Laurent series ... online?
 updated one year ago
 3 replies
 1 Medal
Mathematics

experimentX:
Group Title
Show that
\[ \sum_{n=1}^\infty {\sin n \over n} = {1 + \pi \over 2}\]
 updated one year ago
 50 replies
 2 Medals
Mathematics
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