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1d
revised What is the name of this book?
edited tags
1d
comment What is the name of this book?
I'm amused at the triple of answers. I'm further amused at how similar our search terms were.
1d
answered What is the name of this book?
1d
reviewed Approve convergent series and divergent series
1d
comment convergent series and divergent series
I made the numerator smaller and the denominator bigger.
1d
answered Prove $\lim_\limits{x\to\infty}\dfrac{P_k(x)}{P_{k+1}(x)}=0$
1d
answered convergent series and divergent series
1d
answered How we can solve that $\lim _{_{x\rightarrow \infty }}\int _0^x\:e^{t^2}dt$?
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comment How we can solve that $\lim _{_{x\rightarrow \infty }}\int _0^x\:e^{t^2}dt$?
Ideally, you have the question in both the title (if it fits; if not, then good indication of the question) and the body of the post. More ideally, you motivate the question as well in the body of the post.
1d
comment Seeking Recommendation on Number Theory textbooks
I recommend looking at some of the other (many) posts about this and similar subjects here. I will also add that your intended sequence is a very good sequence.
1d
awarded  Revival
1d
answered $p^{th}$ power harmonic series
1d
revised Given $\lvert \vec u \rvert, \lvert \vec v \rvert$, and $\angle(\vec u, \vec v)$, calculate $\cos \angle(\vec u + \vec v, \vec u - \vec v)$.
edited tags; edited title
1d
reviewed Reject Given $\lvert \vec u \rvert, \lvert \vec v \rvert$, and $\angle(\vec u, \vec v)$, calculate $\cos \angle(\vec u + \vec v, \vec u - \vec v)$.
1d
answered Given $\lvert \vec u \rvert, \lvert \vec v \rvert$, and $\angle(\vec u, \vec v)$, calculate $\cos \angle(\vec u + \vec v, \vec u - \vec v)$.
1d
answered Trying to figure out formula for deciding how to write Linear Transformation as a matrix relative to a basis
1d
answered Prove that $z^2 \equiv ab$ mod $p$ is solvable if and only if both or neither of $x^2 \equiv b$ mod $p$ are solvable.
1d
revised Prove that $z^2 \equiv ab$ mod $p$ is solvable if and only if both or neither of $x^2 \equiv b$ mod $p$ are solvable.
edited tags
2d
comment Differentiability of an absolute function.
What seems wrong? And how did you prove that the derivative at $0$ is $0$?
2d
comment Determining Quotient group
What's a linear function to you? Is if a function $f(x) = ax + b$? Or is it a function $f(x)$ such that for any scalars $a,b$ and elements $x,y$ of the domaon, $f(ax + by) = af(x) + bf(y)$?