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seen Feb 4 at 23:06

"You have enemies? Good. That means you've stood up for something, sometime in your life" - Winston Churchill


Feb
24
answered Factoring a polynomial
Feb
24
revised Integrating $\int \sin^n{x} \ dx$
added 4 characters in body
Feb
24
comment Integrating $\int \sin^n{x} \ dx$
I think you might have an extra x in the first term of the answer (by mistake) See the answer below.
Feb
24
answered Integrating $\int \sin^n{x} \ dx$
Feb
23
revised Finding root of a polynomial
edited body
Feb
23
comment Finding root of a polynomial
Nitpicking is good, there is room for progress!
Feb
23
revised Finding root of a polynomial
added 188 characters in body
Feb
23
revised Finding root of a polynomial
deleted 394 characters in body
Feb
23
comment the cube of integer can be written as the difference of two square
Very interesting approach.
Feb
23
answered Finding root of a polynomial
Feb
23
answered Prove by induction (formula for $\sum^n(3i-1)^2$)
Feb
23
answered Product Chain Power Rule: Either it's the book or I am wrong.
Feb
23
comment $\arctan$ of constant multiplied $\tan \varphi$
wolframalpha.com/input/…
Feb
23
answered Finding a limit of a series
Feb
23
answered modulo question
Feb
23
comment $\arctan$ of constant multiplied $\tan \varphi$
So what is your question? What do you need to derive? Do you have to find $\theta$ ?
Feb
23
answered Showing $ \sum_{n=0}^{\infty} \frac{1}{(3n+1)(3n+2)}=\frac{\pi}{3\sqrt{3}}$
Feb
23
awarded  Teacher
Feb
23
awarded  Editor
Feb
23
answered Derivatives of logarithmic functions and the chain rule.