Mathematics
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Alessio K
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All Questions Answers
Score Newest
answer
13
Write $\cos(5x)$ as a function of $\cos(x)$, answer with a polynomial.
Sep 20, 2020
answer
9
Is there a geometrical reason why for $x\geq 0$ and a natural number $n$, $\frac{x^n-1}{x-1 } = \sum_{i=0}^{n-1} x^i$?
Sep 8, 2020
answer
8
Integrate $\int_{0}^{\infty}\frac{\tan^{-1}x}{x\left(1+x^{2}\right)}dx$
Sep 18, 2021
answer
7
Question regarding the value of $y$ in this inequality $|\lim\limits_{x\rightarrow\infty}\frac{x^{1-y}}{x^{y}}|<\infty$
Dec 21, 2019
answer
7
$x^5-209x+56$ admits two roots whose product is $1$, find them.
Sep 6, 2020
answer
6
Can we use integration to find $\sum_{k=1}^\infty \frac {4k}{4{k}^{4}+1}$?
Aug 16, 2020
answer
6
Error in calculating $\lim_{n \rightarrow \infty}\frac{n+1}{\sqrt{n}}$?
Sep 1, 2020
answer
6
Linear approximation of $\cos\big(\frac{\pi}{5}+0.07\big)-\cos\big(\frac{\pi}{5}\big)$
Aug 12, 2020
answer
5
Possible error in a STEP Paper: Matrix Group (STEP 1991 P2 Q9)
Apr 18, 2020
answer
5
Solving complex expression
Aug 10, 2020

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