Mathematics
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user2838619
  • Member for 7 years, 10 months
  • Last seen more than a month ago
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All Questions Answers
Score Newest
question
13
Solving $x_1+x_2=x_3^2, x_2+x_3=x_4^2, x_3+x_4=x_5^2,x_4+x_5=x_1^2, x_5+x_1=x_2^2$ in reals
Sep 7, 2014
question
9
How many $10$ digit number exists that sum of their digits is equal to $15$?
Jul 29, 2014
question
8
prove $\frac {ab}{a+b} \geq \sum ^n_{i=1} \frac{a_ib_i}{a_i+b_i}$
Jul 29, 2014
question
8
Prove two of $\frac{2}{a}+\frac{3}{b}+\frac{6}{c}\geq 6,\frac{2}{b}+\frac{3}{c}+\frac{6}{a}\geq 6,\frac{2}{c}+\frac{3}{a}+\frac{6}{b}\geq 6$ are True
Aug 13, 2014
question
8
if $x+y+z=2$ and $xy+yz+zx=1$,Prove $x,y,z \in \left [0,\frac{4}{3} \right ]$
Sep 8, 2014
answer
8
Prove $\frac{ab}{\sqrt{2c+a+b}}+\frac{bc}{\sqrt{2a+b+c}}+\frac{ca}{\sqrt{2b+c+a}}\le\sqrt\frac{2}{3}$ if $a+b+c=2$
Sep 1, 2014
answer
8
Prove that $\sum \limits_{cyc}\frac {a}{(b+c)^2} \geq \frac {9}{4(a+b+c)}$
Aug 27, 2014
question
7
Solve $x+3y=4y^3,y+3z=4z^3 ,z+3x=4x^3$ in reals
Sep 9, 2014
question
7
Alternate proof for $a^2+b^2+c^2\le 9R^2$
Sep 21, 2014
question
7
Prove that $\sum \limits_{cyc}\frac {a}{(b+c)^2} \geq \frac {9}{4(a+b+c)}$
Jul 30, 2014
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8
Why a question which is a canonical example of "off-topic" is getting answers? What actions can be taken?
6
Tag management 2016
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12
Generating Random Real numbers with certain numbers not included

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