Mathematics
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user574848
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may be inconsistent

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All Questions Answers
Score Newest
question
20
Solving $f(yf(x)+x/y)=xyf(x^2+y^2)$ over the reals
Mar 21, 2019
answer
10
Given a three digit number $n$, let $f(n)$ be the sum of digits of $n$, their products in pairs, and the product of all digits. When does $n=f(n)$?
Nov 19, 2018
answer
7
Prove Fibonacci Sequence Property: $x^2_n + x^2_{n+1}=x_{2n+1}$
Jan 8, 2019
question
5
Proving that there is an element common to all $35$ sets given certain set restrictions
Nov 19, 2018
answer
5
Find all functions $f:\Bbb{R} \to \Bbb{R}$ such that for all $x,y,z \in \Bbb{R} $ , $f(f(x)+yz)=x+f(y)f(z)$
Mar 31, 2019
question
4
If $pqr(p+q+r)$ is a square and $p,q,r$ are primes, then what's the maximum value of $p+q+r$?
Aug 26, 2018
answer
3
Fibonacci number that ends with 2014 zeros?
Jul 14, 2018
answer
3
Examples of the Pigeonhole Principle
Mar 17, 2019
answer
3
Find all functions for $f:\Bbb{N}\to\Bbb{N}$ such that $f\left(m^2+f(n)\right)=f\left(m^2\right) +n$
Jun 23, 2019
answer
3
Cauchy equation $ f ( x + y ) = f ( x ) + f ( y ) $ with an additional condition $ f \left( \frac 1 x \right) = \frac 1 { x ^ 2 } f ( x ) $
Oct 8, 2019
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19
Why is the website suddenly weird? How can I permanently change it?
10
Is it incorrect if I add [tag:contest-math] to my questions, even if it isn't explicitly from a contest?

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