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Dec
31
revised How many combinations can a group of n people form?
subsets with one elemnt must be excluded
Dec
31
revised Solving $\sqrt{x^2-5} = x-1$
edited title
Dec
22
revised Prove if n<m there is at least one [(n/m)]?
rolled back to initial version because the wording of the question qas changed
Dec
22
revised Prove if n<m there is at least one [(n/m)]?
rolled back to initial version because the wording of the question qas changed
Dec
22
revised Prove if n<m there is at least one [(n/m)]?
rolled back to a previous revision
Dec
22
revised Prove if n<m there is at least one [(n/m)]?
rolled back to a previous revision
Dec
22
revised Knapsack problem NP-complete
typo
Dec
21
revised Knapsack problem NP-complete
added 48 characters in body
Dec
21
revised Knapsack problem NP-complete
rearranged two expressions
Dec
21
revised Knapsack problem NP-complete
typo
Dec
19
revised How are the elementary arithmetics defined?
Leopold Kronecker, not Ludwig :-)
Dec
19
revised Proving that this function is negligible
edited tags
Dec
18
revised Prove $a^ab^bc^c\ge (abc)^{\frac{a+b+c}3}$ for positive numbers.
typo correction, latex improvement
Dec
3
revised Solving linear first order differential equation with hard integral
improved format
Dec
1
revised Confused on a question on sets and functions
typo
Dec
1
revised Confused on a question on sets and functions
typo
Nov
30
revised Trick for roots of symmetric polynomials
typos, using palindromic instead of symmetric
Nov
27
revised System with two quadratic equations
I changed the title to something more meaningful
Nov
24
revised Solving this trigonometric task
Replaced photo of equation with actual LaTEX.
Nov
23
revised $x,y,z$ are positive real numbers and $x+y+z=1$ $\implies$ $\bigg(1+\dfrac 1x\bigg)\bigg(1+\dfrac 1y \bigg)\bigg(1+\dfrac 1z \bigg)\ge 64$?
typo