# Gigili

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bio website location age member for 3 years, 3 months seen Jul 27 at 9:56 profile views 2,454

I write to discover what I think.

# 1,622 Actions

 Feb4 revised Use equational proofs to solve the problem added 2 characters in body; edited title Feb4 reviewed Leave Open How can I show that an odd degreed polynomial with coefficients in the real space always has a root in $\mathbb{R}$? Feb4 reviewed Looks OK How can I show that an odd degreed polynomial with coefficients in the real space always has a root in $\mathbb{R}$? Feb4 reviewed Reviewed Multivariable Calculus Vector Field Potential Feb4 revised Multivariable Calculus Vector Field Potential added 2 characters in body Feb4 reviewed Reviewed Need help proving an equality Feb4 revised Need help proving an equality added 8 characters in body Feb4 reviewed Close Number of peaks in a random iid sequence Feb4 reviewed Close Show that space of mxm matrices form a surface Feb4 reviewed Close Solving equation: $\cos x-\sin x (2\cos x-4)=0$ Feb2 reviewed Close shortest distance between two points Feb2 reviewed Close Prove that $gcd((a^{n}-b^{n})/(a-b), a-b) = gcd(n(a,b)^{n-1}, a-b)$ for a,b $\in$ $\mathbb{Z}^+$ Jan30 awarded Notable Question Jan26 comment How to show $((k+1)!)^2 2^k \leq (2(k+1))!$ @StevenStadnicki: Right, but your comment is a thorough answer as it stands. You could post it as an answer and ... Ta-Da! The problem is solved! Jan26 revised How to show $((k+1)!)^2 2^k \leq (2(k+1))!$ deleted 16 characters in body; edited tags Jan26 comment How to show $((k+1)!)^2 2^k \leq (2(k+1))!$ @StevenStadnicki: Why would you post a complete answer as a comment which left us with nothing? Jan26 revised A problem on denseness deleted 2 characters in body Jan26 revised How to prove this theorem from precalculs added 7 characters in body Jan26 revised Find one series solution for $xy'' - y = 0$ edited title Jan26 revised Can a relation be transitive when it is not reflexive? edited title