Mathematics
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Delta-u
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All Questions Answers
Score Newest
answer
10
Find the value of $ab$
Apr 24, 2018
answer
9
A spherical ball of salt is dissolving in water
Apr 25, 2018
answer
8
If $|z| < 1$, prove that $\Re \left(\frac{1}{1 - z} \right) > \frac{1}{2}$.
May 3, 2018
answer
7
A problem about the differential mean value theorem $2ηf(1)+(c^2-1)f'(η)=f(ξ)$
Sep 10, 2018
answer
7
How to show the function $ f(x) := e^{x^2/2} \int_{-\infty}^x g(t) e^{-t^2/2} \,dt$ is bounded?
Jul 10, 2018
answer
6
Proof by induction. Two matrices are equal.
Apr 28, 2018
answer
6
$\lim_{n\rightarrow \infty} \frac{1^4+2^4+...+n^4}{n^5}=\frac{1}{5}$ using integral(lower-/upper- or Riemann-sums)
May 1, 2018
answer
5
Linear Algebra, matrix for a linear transformation
Apr 9, 2018
answer
5
Is there a class of real functions strictly between $C^{\infty}$ (smooth) and $C^{\omega}$ (analytic)?
Apr 18, 2018
answer
5
Calculate $ \lim_{n\to \infty} \frac{n}{\ln(n)} \int_{1}^{n^2} \frac{\ln(x)}{x^2+nx+n^2}\,dx $
Apr 28, 2018

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