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Mar
14
revised How to compute the sum of every $k$-th binomial coefficient?
edited body; edited tags
Mar
14
comment Sum of every $k$th binomial coefficient.
By summing those equations, you would get $(1 + 1)^n + (1+\omega)^n + (1+\omega^2)^n = $ the sum of every third coefficient. But how do you get the closed form on that sum?
Mar
13
revised How to compute the sum of every $k$-th binomial coefficient?
added 254 characters in body
Mar
13
revised How to compute the sum of every $k$-th binomial coefficient?
deleted 45 characters in body
Mar
13
comment How to compute the sum of every $k$-th binomial coefficient?
Yes, I noticed that too so perhaps I misunderstood something.
Mar
13
asked How to compute the sum of every $k$-th binomial coefficient?
Feb
8
comment How many words can be obtained using 2n letters?
And I assume the same kind of reasoning goes for the generalized case with k letters.
Feb
8
accepted How many words can be obtained using 2n letters?
Feb
7
asked How many words can be obtained using 2n letters?
Jan
10
awarded  Yearling
Dec
23
awarded  Popular Question
Dec
2
accepted Preservation of surjectivity when composing functions
Dec
2
accepted Help in understanding integration by changing the variable
Dec
2
asked Preservation of surjectivity when composing functions
Nov
4
accepted Complex number modulus inequality
Nov
4
asked Complex number modulus inequality
Oct
3
accepted How to figure out x and y components of a vector
Oct
3
asked How to figure out x and y components of a vector
Sep
4
accepted What does it intuitively mean that the divergence of a vector field is 0?
Sep
4
asked What does it intuitively mean that the divergence of a vector field is 0?