Mathematics
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emonHR

My World In Numbers, My World In Fractals

Still, an undergraduate student in Mathematics of Dhaka University who also occasionally teaches problem-solving and other fun math to high school students.
Everything that we think about ourselves is less than what we actually have inside us.

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8 How to find the antiderivative of the $\sqrt{4-x^2}$? Dec 24 '19
8 Limit $\lim_{x\to \infty}\frac{3x-\cos(2x)}{4x+\sin x}$ Feb 18 '20
6 Find the nature of the roots of the equation $ 6x^4-25x^3+81x^2-9x-13=0$ using Descartes's rule of signs Aug 29 '18
5 Question involving de Moivre identity and writing $\cos4\theta$ in terms of complex numbers Dec 25 '19
4 Find the volume of the solid within the sphere $x^2+y^2+z^2=9$, outside the cone $z=\sqrt{x^2+y^2}$, and above the $xy$-plane. Dec 21 '19
4 relearning something in mathematics? Mar 5 '20
4 How to express the infinite power tower $a^{{{{{{(a+1)}^{(a+2)}}^{(a+3)}}^{.}}^{.}}^{.}}$? Dec 2 '19
4 Sum to n terms the series $\cos \theta+ 2\cos 2\theta+ \cdots + n\cos n\theta$ Aug 27 '18
3 How to show that: $\left(\frac{mn+1}{m+1}\right)^{m+1} > n^m$ Aug 28 '18
3 Show that the solid generated by the revolution of the region has finite volume but infinite surface area Oct 6 '18
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