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Mathematics
Peter Szilas's user avatar
Peter Szilas's user avatar
Peter Szilas's user avatar
Peter Szilas
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21
Convergence or not of infinite series: $\sum^{\infty}_{n=1}\frac{n}{1+n^2}$
Jun 8, 2018
18
General formula for nth element of the sequence 0, 1, 0, 1, ...
Sep 25, 2018
14
Can the product of three complex numbers ever be real?
Mar 3, 2018
12
How can I prove this statement about subsets?
Sep 26, 2018
11
Proof that the number of proofs is countably infinite
Jun 11, 2018
10
Find the value of $x$, for which the function $h(x) = \frac 1{(x-5)^2+4(x-5)+4}$ is undefined
Sep 3, 2017
7
solve $\lim_{x\rightarrow -5} \frac{2x^2-50}{2x^2+3x-35}$
Nov 22, 2018
7
If an integer $m$ is odd how can it be proven that its square would be odd?
Nov 4, 2017
7
Prove polynomial identity $x^k-1=(x-1)(x^{k-1}+x^{k-2}+\ldots+1).$
Feb 19, 2018
6
What is the time derivative of speed?
May 25